diff --git a/core/lib/Drupal/Core/Field/Plugin/migrate/field/Email.php b/core/lib/Drupal/Core/Field/Plugin/migrate/field/Email.php
index af6229a..d34a0e6 100644
--- a/core/lib/Drupal/Core/Field/Plugin/migrate/field/Email.php
+++ b/core/lib/Drupal/Core/Field/Plugin/migrate/field/Email.php
@@ -40,9 +40,17 @@ public function getFieldFormatterMap() {
   }
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
    */
   public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     $process = [
       'plugin' => 'sub_process',
       'source' => $field_name,
diff --git a/core/modules/datetime/src/Plugin/migrate/field/DateField.php b/core/modules/datetime/src/Plugin/migrate/field/DateField.php
index a503fbb..82b0c11 100644
--- a/core/modules/datetime/src/Plugin/migrate/field/DateField.php
+++ b/core/modules/datetime/src/Plugin/migrate/field/DateField.php
@@ -33,9 +33,17 @@ public function getFieldWidgetMap() {
   }
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
    */
   public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     switch ($data['type']) {
       case 'date':
         $from_format = 'Y-m-d\TH:i:s';
diff --git a/core/modules/datetime/src/Plugin/migrate/field/d6/DateField.php b/core/modules/datetime/src/Plugin/migrate/field/d6/DateField.php
index 4e7cd88..2c1d25e 100644
--- a/core/modules/datetime/src/Plugin/migrate/field/d6/DateField.php
+++ b/core/modules/datetime/src/Plugin/migrate/field/d6/DateField.php
@@ -38,9 +38,17 @@ public function getFieldWidgetMap() {
   }
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
    */
   public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     switch ($data['type']) {
       case 'date':
         $from_format = 'Y-m-d\TH:i:s';
diff --git a/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/DateFieldTest.php b/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/DateFieldTest.php
index 6b7f137..794d788 100644
--- a/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/DateFieldTest.php
+++ b/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/DateFieldTest.php
@@ -29,6 +29,10 @@ public function testUnknownDateType() {
     $this->plugin = new DateField([], '', []);
 
     $this->setExpectedException(MigrateException::class, "Field field_date of type 'timestamp' is an unknown date field type.");
+    $this->plugin->defineValueProcessPipeline($this->migration, 'field_date', ['type' => 'timestamp']);
+
+    // Retain backwards compatibility testing.
+    $this->setExpectedException(MigrateException::class, "Field field_date of type 'timestamp' is an unknown date field type.");
     $this->plugin->processFieldValues($this->migration, 'field_date', ['type' => 'timestamp']);
   }
 
diff --git a/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/d6/DateFieldTest.php b/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/d6/DateFieldTest.php
index 7e67881..056e0fe 100644
--- a/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/d6/DateFieldTest.php
+++ b/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/d6/DateFieldTest.php
@@ -30,6 +30,10 @@ public function testUnknownDateType() {
     $this->plugin = new DateField([], '', []);
 
     $this->setExpectedException(MigrateException::class, "Field field_date of type 'timestamp' is an unknown date field type.");
+    $this->plugin->defineValueProcessPipeline($this->migration, 'field_date', ['type' => 'timestamp']);
+
+    // Retain backwards compatibility testing.
+    $this->setExpectedException(MigrateException::class, "Field field_date of type 'timestamp' is an unknown date field type.");
     $this->plugin->processFieldValues($this->migration, 'field_date', ['type' => 'timestamp']);
   }
 
diff --git a/core/modules/field/migrations/d6_field.yml b/core/modules/field/migrations/d6_field.yml
index 92c28b2..b387d1f 100644
--- a/core/modules/field/migrations/d6_field.yml
+++ b/core/modules/field/migrations/d6_field.yml
@@ -3,7 +3,7 @@ label: Field configuration
 migration_tags:
   - Drupal 6
 class: Drupal\migrate_drupal\Plugin\migrate\FieldMigration
-field_plugin_method: processField
+field_plugin_method: alterFieldMigration
 source:
   plugin: d6_field
   constants:
diff --git a/core/modules/field/migrations/d6_field_formatter_settings.yml b/core/modules/field/migrations/d6_field_formatter_settings.yml
index fc97ad0..8a24060 100644
--- a/core/modules/field/migrations/d6_field_formatter_settings.yml
+++ b/core/modules/field/migrations/d6_field_formatter_settings.yml
@@ -3,7 +3,7 @@ label: Field formatter configuration
 migration_tags:
   - Drupal 6
 class: Drupal\migrate_drupal\Plugin\migrate\FieldMigration
-field_plugin_method: processFieldFormatter
+field_plugin_method: alterFieldFormatterMigration
 source:
   plugin: d6_field_instance_per_view_mode
   constants:
diff --git a/core/modules/field/migrations/d6_field_instance.yml b/core/modules/field/migrations/d6_field_instance.yml
index 3a413c1..9a99a7a 100644
--- a/core/modules/field/migrations/d6_field_instance.yml
+++ b/core/modules/field/migrations/d6_field_instance.yml
@@ -3,7 +3,7 @@ label: Field instance configuration
 migration_tags:
   - Drupal 6
 class: Drupal\migrate_drupal\Plugin\migrate\FieldMigration
-field_plugin_method: processFieldInstance
+field_plugin_method: alterFieldInstanceMigration
 source:
   plugin: d6_field_instance
   constants:
diff --git a/core/modules/field/migrations/d6_field_instance_widget_settings.yml b/core/modules/field/migrations/d6_field_instance_widget_settings.yml
index b5f6f6d..a5b0554 100644
--- a/core/modules/field/migrations/d6_field_instance_widget_settings.yml
+++ b/core/modules/field/migrations/d6_field_instance_widget_settings.yml
@@ -3,7 +3,7 @@ label: Field instance widget configuration
 migration_tags:
   - Drupal 6
 class: Drupal\migrate_drupal\Plugin\migrate\FieldMigration
-field_plugin_method: processFieldWidget
+field_plugin_method: alterFieldWidgetMigration
 source:
   plugin: d6_field_instance_per_form_display
   constants:
diff --git a/core/modules/field/migrations/d7_field.yml b/core/modules/field/migrations/d7_field.yml
index 1fa0069..5c8028e 100644
--- a/core/modules/field/migrations/d7_field.yml
+++ b/core/modules/field/migrations/d7_field.yml
@@ -3,7 +3,7 @@ label: Field configuration
 migration_tags:
   - Drupal 7
 class: Drupal\migrate_drupal\Plugin\migrate\FieldMigration
-field_plugin_method: processField
+field_plugin_method: alterFieldMigration
 source:
   plugin: d7_field
   constants:
diff --git a/core/modules/field/migrations/d7_field_formatter_settings.yml b/core/modules/field/migrations/d7_field_formatter_settings.yml
index 5c9335c..5f98f63 100644
--- a/core/modules/field/migrations/d7_field_formatter_settings.yml
+++ b/core/modules/field/migrations/d7_field_formatter_settings.yml
@@ -3,7 +3,7 @@ label: Field formatter configuration
 migration_tags:
   - Drupal 7
 class: Drupal\migrate_drupal\Plugin\migrate\FieldMigration
-field_plugin_method: processFieldFormatter
+field_plugin_method: alterFieldFormatterMigration
 source:
   plugin: d7_field_instance_per_view_mode
   constants:
diff --git a/core/modules/field/migrations/d7_field_instance.yml b/core/modules/field/migrations/d7_field_instance.yml
index 4e1901d..fbd338e 100644
--- a/core/modules/field/migrations/d7_field_instance.yml
+++ b/core/modules/field/migrations/d7_field_instance.yml
@@ -3,7 +3,7 @@ label: Field instance configuration
 migration_tags:
   - Drupal 7
 class: Drupal\migrate_drupal\Plugin\migrate\FieldMigration
-field_plugin_method: processFieldInstance
+field_plugin_method: alterFieldInstanceMigration
 source:
   plugin: d7_field_instance
   constants:
diff --git a/core/modules/field/migrations/d7_field_instance_widget_settings.yml b/core/modules/field/migrations/d7_field_instance_widget_settings.yml
index ac281e1..10d70a7 100644
--- a/core/modules/field/migrations/d7_field_instance_widget_settings.yml
+++ b/core/modules/field/migrations/d7_field_instance_widget_settings.yml
@@ -3,7 +3,7 @@ label: Field instance widget configuration
 migration_tags:
   - Drupal 7
 class: Drupal\migrate_drupal\Plugin\migrate\FieldMigration
-field_plugin_method: processFieldWidget
+field_plugin_method: alterFieldWidgetMigration
 source:
   plugin: d7_field_instance_per_form_display
   constants:
diff --git a/core/modules/file/src/Plugin/migrate/field/d6/FileField.php b/core/modules/file/src/Plugin/migrate/field/d6/FileField.php
index 87c3bfe..2cb8d7c 100644
--- a/core/modules/file/src/Plugin/migrate/field/d6/FileField.php
+++ b/core/modules/file/src/Plugin/migrate/field/d6/FileField.php
@@ -40,9 +40,17 @@ public function getFieldFormatterMap() {
   }
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
    */
   public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     $process = [
       'plugin' => 'd6_field_file',
       'source' => $field_name,
diff --git a/core/modules/file/src/Plugin/migrate/field/d7/FileField.php b/core/modules/file/src/Plugin/migrate/field/d7/FileField.php
index 8157def..72000c1 100644
--- a/core/modules/file/src/Plugin/migrate/field/d7/FileField.php
+++ b/core/modules/file/src/Plugin/migrate/field/d7/FileField.php
@@ -16,9 +16,17 @@
 class FileField extends D6FileField {
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
    */
   public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     $process = [
       'plugin' => 'sub_process',
       'source' => $field_name,
diff --git a/core/modules/file/src/Plugin/migrate/field/d7/ImageField.php b/core/modules/file/src/Plugin/migrate/field/d7/ImageField.php
index ea2005e..6cbd157 100644
--- a/core/modules/file/src/Plugin/migrate/field/d7/ImageField.php
+++ b/core/modules/file/src/Plugin/migrate/field/d7/ImageField.php
@@ -16,9 +16,17 @@
 class ImageField extends FieldPluginBase {
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
    */
   public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     $process = [
       'plugin' => 'sub_process',
       'source' => $field_name,
diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d6/FileCckTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d6/FileCckTest.php
index 6a393df..eb5fe06 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d6/FileCckTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d6/FileCckTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's processFieldValues() method will call
+    // The plugin's defineValueProcessPipeline() method will call
     // mergeProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to mergeProcessOfProperty().
diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d7/FileCckTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d7/FileCckTest.php
index 414d9c2..c9e4f6f 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d7/FileCckTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d7/FileCckTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's processFieldValues() method will call
+    // The plugin's defineValueProcessPipeline() method will call
     // mergeProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to mergeProcessOfProperty().
diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d7/ImageCckTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d7/ImageCckTest.php
index 2175c64..b20d3d0 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d7/ImageCckTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/cckfield/d7/ImageCckTest.php
@@ -32,7 +32,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's processFieldValues() method will call
+    // The plugin's defineValueProcessPipeline() method will call
     // mergeProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to mergeProcessOfProperty().
diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/field/d6/FileFieldTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/field/d6/FileFieldTest.php
index 70f6d60..937cd7d 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/field/d6/FileFieldTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/field/d6/FileFieldTest.php
@@ -32,7 +32,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's processFieldValues() method will call
+    // The plugin's defineValueProcessPipeline() method will call
     // mergeProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to mergeProcessOfProperty().
@@ -57,6 +57,19 @@ public function testProcessFieldValues() {
   }
 
   /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testDefineValueProcessPipeline() {
+    $this->plugin->defineValueProcessPipeline($this->migration, 'somefieldname', []);
+
+    $expected = [
+      'plugin' => 'd6_field_file',
+      'source' => 'somefieldname',
+    ];
+    $this->assertSame($expected, $this->migration->getProcess());
+  }
+
+  /**
    * Data provider for testGetFieldType().
    */
   public function getFieldTypeProvider() {
diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/FileFieldTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/FileFieldTest.php
index 36ca6a4..1e1ad76 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/FileFieldTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/FileFieldTest.php
@@ -32,7 +32,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's processFieldValues() method will call
+    // The plugin's defineValueProcessPipeline() method will call
     // mergeProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to mergeProcessOfProperty().
@@ -62,6 +62,24 @@ public function testProcessFieldValues() {
   }
 
   /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testDefineValueProcessPipeline() {
+    $this->plugin->defineValueProcessPipeline($this->migration, 'somefieldname', []);
+
+    $expected = [
+      'plugin' => 'iterator',
+      'source' => 'somefieldname',
+      'process' => [
+        'target_id' => 'fid',
+        'display' => 'display',
+        'description' => 'description',
+      ],
+    ];
+    $this->assertSame($expected, $this->migration->getProcess());
+  }
+
+  /**
    * Data provider for testGetFieldType().
    */
   public function getFieldTypeProvider() {
diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/ImageFieldTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/ImageFieldTest.php
index 3cab353..0d96a9e 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/ImageFieldTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/ImageFieldTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's processFieldValues() method will call
+    // The plugin's defineValueProcessPipeline() method will call
     // mergeProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to mergeProcessOfProperty().
@@ -62,4 +62,24 @@ public function testProcessFieldValues() {
     $this->assertSame($expected, $this->migration->getProcess());
   }
 
+  /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testDefineValueProcessPipeline() {
+    $this->plugin->defineValueProcessPipeline($this->migration, 'somefieldname', []);
+
+    $expected = [
+      'plugin' => 'iterator',
+      'source' => 'somefieldname',
+      'process' => [
+        'target_id' => 'fid',
+        'alt' => 'alt',
+        'title' => 'title',
+        'width' => 'width',
+        'height' => 'height',
+      ],
+    ];
+    $this->assertSame($expected, $this->migration->getProcess());
+  }
+
 }
diff --git a/core/modules/link/src/Plugin/migrate/cckfield/LinkField.php b/core/modules/link/src/Plugin/migrate/cckfield/LinkField.php
index f902987..1a823f5 100644
--- a/core/modules/link/src/Plugin/migrate/cckfield/LinkField.php
+++ b/core/modules/link/src/Plugin/migrate/cckfield/LinkField.php
@@ -29,8 +29,8 @@ class LinkField extends CckFieldPluginBase {
    * {@inheritdoc}
    */
   public function getFieldFormatterMap() {
-    // See d6_field_formatter_settings.yml and CckFieldPluginBase
-    // processFieldFormatter().
+    // See d6_field_formatter_settings.yml and FieldPluginBase
+    // alterFieldFormatterMigration().
     return [
       'default' => 'link',
       'plain' => 'link',
diff --git a/core/modules/link/src/Plugin/migrate/cckfield/d7/LinkField.php b/core/modules/link/src/Plugin/migrate/cckfield/d7/LinkField.php
index c4f09f2..802bf9a 100644
--- a/core/modules/link/src/Plugin/migrate/cckfield/d7/LinkField.php
+++ b/core/modules/link/src/Plugin/migrate/cckfield/d7/LinkField.php
@@ -38,9 +38,14 @@ public function getFieldWidgetMap() {
   }
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * alterFieldInstanceMigration() instead.
    */
   public function processFieldInstance(MigrationInterface $migration) {
+    $this->alterFieldInstanceMigration($migration);
+  }
+
+  public function alterFieldInstanceMigration(MigrationInterface $migration) {
     $process = [
       'plugin' => 'static_map',
       'source' => 'settings/title',
diff --git a/core/modules/link/src/Plugin/migrate/field/d6/LinkField.php b/core/modules/link/src/Plugin/migrate/field/d6/LinkField.php
index 547e492..a948ef8 100644
--- a/core/modules/link/src/Plugin/migrate/field/d6/LinkField.php
+++ b/core/modules/link/src/Plugin/migrate/field/d6/LinkField.php
@@ -23,7 +23,7 @@ class LinkField extends FieldPluginBase {
    */
   public function getFieldFormatterMap() {
     // See d6_field_formatter_settings.yml and FieldPluginBase
-    // processFieldFormatter().
+    // alterFieldFormatterMigration().
     return [
       'default' => 'link',
       'plain' => 'link',
@@ -37,9 +37,17 @@ public function getFieldFormatterMap() {
   }
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
    */
   public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     $process = [
       'plugin' => 'field_link',
       'source' => $field_name,
diff --git a/core/modules/link/src/Plugin/migrate/field/d7/LinkField.php b/core/modules/link/src/Plugin/migrate/field/d7/LinkField.php
index 0dcf4c6..317d3c1 100644
--- a/core/modules/link/src/Plugin/migrate/field/d7/LinkField.php
+++ b/core/modules/link/src/Plugin/migrate/field/d7/LinkField.php
@@ -31,9 +31,14 @@ public function getFieldWidgetMap() {
   }
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * alterFieldInstanceMigration() instead.
    */
   public function processFieldInstance(MigrationInterface $migration) {
+    $this->alterFieldInstanceMigration($migration);
+  }
+
+  public function alterFieldInstanceMigration(MigrationInterface $migration) {
     $process = [
       'plugin' => 'static_map',
       'source' => 'settings/title',
diff --git a/core/modules/link/tests/src/Kernel/Plugin/migrate/cckfield/d7/LinkCckTest.php b/core/modules/link/tests/src/Kernel/Plugin/migrate/cckfield/d7/LinkCckTest.php
index 14345a6..9268c2e 100644
--- a/core/modules/link/tests/src/Kernel/Plugin/migrate/cckfield/d7/LinkCckTest.php
+++ b/core/modules/link/tests/src/Kernel/Plugin/migrate/cckfield/d7/LinkCckTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's processFieldInstance() method will call
+    // The plugin's alterFieldInstanceMigration() method will call
     // mergeProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to mergeProcessOfProperty().
@@ -72,4 +72,23 @@ public function testProcessCckFieldValues() {
     $this->assertSame($expected, $this->migration->getProcess());
   }
 
+  /**
+   * @covers ::alterFieldInstanceMigration
+   */
+  public function testAlterFieldInstanceMigration() {
+    $this->plugin->alterFieldInstanceMigration($this->migration);
+
+    $expected = [
+      'plugin' => 'static_map',
+      'source' => 'settings/title',
+      'bypass' => TRUE,
+      'map' => [
+        'disabled' => DRUPAL_DISABLED,
+        'optional' => DRUPAL_OPTIONAL,
+        'required' => DRUPAL_REQUIRED,
+      ],
+    ];
+    $this->assertSame($expected, $this->migration->getProcess());
+  }
+
 }
diff --git a/core/modules/link/tests/src/Kernel/Plugin/migrate/field/d7/LinkFieldTest.php b/core/modules/link/tests/src/Kernel/Plugin/migrate/field/d7/LinkFieldTest.php
index 494aa02..10ce553 100644
--- a/core/modules/link/tests/src/Kernel/Plugin/migrate/field/d7/LinkFieldTest.php
+++ b/core/modules/link/tests/src/Kernel/Plugin/migrate/field/d7/LinkFieldTest.php
@@ -38,7 +38,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's ProcessFieldInstance() method will call
+    // The plugin's alterFieldInstanceMigration() method will call
     // mergeProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to mergeProcessOfProperty().
@@ -69,4 +69,23 @@ public function testProcessFieldInstance() {
     $this->assertSame($expected, $this->migration->getProcess());
   }
 
+  /**
+   * @covers ::alterFieldInstanceMigration
+   */
+  public function testAlterFieldInstanceMigration() {
+    $this->plugin->alterFieldInstanceMigration($this->migration);
+
+    $expected = [
+      'plugin' => 'static_map',
+      'source' => 'settings/title',
+      'bypass' => TRUE,
+      'map' => [
+        'disabled' => DRUPAL_DISABLED,
+        'optional' => DRUPAL_OPTIONAL,
+        'required' => DRUPAL_REQUIRED,
+      ],
+    ];
+    $this->assertSame($expected, $this->migration->getProcess());
+  }
+
 }
diff --git a/core/modules/link/tests/src/Unit/Plugin/migrate/field/d6/LinkFieldTest.php b/core/modules/link/tests/src/Unit/Plugin/migrate/field/d6/LinkFieldTest.php
index 0dbc741..013062b 100644
--- a/core/modules/link/tests/src/Unit/Plugin/migrate/field/d6/LinkFieldTest.php
+++ b/core/modules/link/tests/src/Unit/Plugin/migrate/field/d6/LinkFieldTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's processFieldValues() method will call
+    // The plugin's defineValueProcessPipeline() method will call
     // mergeProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to mergeProcessOfProperty().
@@ -56,4 +56,17 @@ public function testProcessFieldValues() {
     $this->assertSame($expected, $this->migration->getProcess());
   }
 
+  /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testDefineValueProcessPipeline() {
+    $this->plugin->defineValueProcessPipeline($this->migration, 'somefieldname', []);
+
+    $expected = [
+      'plugin' => 'field_link',
+      'source' => 'somefieldname',
+    ];
+    $this->assertSame($expected, $this->migration->getProcess());
+  }
+
 }
diff --git a/core/modules/migrate_drupal/src/Plugin/MigrateFieldInterface.php b/core/modules/migrate_drupal/src/Plugin/MigrateFieldInterface.php
index 2aac5d1..96ed53e 100644
--- a/core/modules/migrate_drupal/src/Plugin/MigrateFieldInterface.php
+++ b/core/modules/migrate_drupal/src/Plugin/MigrateFieldInterface.php
@@ -17,7 +17,7 @@
    * @param \Drupal\migrate\Plugin\MigrationInterface $migration
    *   The migration entity.
    */
-  public function processField(MigrationInterface $migration);
+  public function alterFieldMigration(MigrationInterface $migration);
 
   /**
    * Apply any custom processing to the field instance migration.
@@ -25,7 +25,7 @@ public function processField(MigrationInterface $migration);
    * @param \Drupal\migrate\Plugin\MigrationInterface $migration
    *   The migration entity.
    */
-  public function processFieldInstance(MigrationInterface $migration);
+  public function alterFieldInstanceMigration(MigrationInterface $migration);
 
   /**
    * Apply any custom processing to the field widget migration.
@@ -33,7 +33,7 @@ public function processFieldInstance(MigrationInterface $migration);
    * @param \Drupal\migrate\Plugin\MigrationInterface $migration
    *   The migration entity.
    */
-  public function processFieldWidget(MigrationInterface $migration);
+  public function alterFieldWidgetMigration(MigrationInterface $migration);
 
   /**
    * Apply any custom processing to the field formatter migration.
@@ -41,7 +41,7 @@ public function processFieldWidget(MigrationInterface $migration);
    * @param \Drupal\migrate\Plugin\MigrationInterface $migration
    *   The migration entity.
    */
-  public function processFieldFormatter(MigrationInterface $migration);
+  public function alterFieldFormatterMigration(MigrationInterface $migration);
 
   /**
    * Get the field formatter type from the source.
@@ -57,7 +57,7 @@ public function getFieldFormatterType(Row $row);
   /**
    * Get a map between D6 formatters and D8 formatters for this field type.
    *
-   * This is used by static::processFieldFormatter() in the base class.
+   * This is used by static::alterFieldFormatterMigration() in the base class.
    *
    * @return array
    *   The keys are D6 formatters and the values are D8 formatters.
@@ -93,7 +93,7 @@ public function getFieldWidgetMap();
    * @param array $data
    *   The array of field data from FieldValues::fieldData().
    */
-  public function processFieldValues(MigrationInterface $migration, $field_name, $data);
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data);
 
   /**
    * Computes the destination type of a migrated field.
diff --git a/core/modules/migrate_drupal/src/Plugin/migrate/cckfield/CckFieldPluginBase.php b/core/modules/migrate_drupal/src/Plugin/migrate/cckfield/CckFieldPluginBase.php
index 220c8bb..104c137 100644
--- a/core/modules/migrate_drupal/src/Plugin/migrate/cckfield/CckFieldPluginBase.php
+++ b/core/modules/migrate_drupal/src/Plugin/migrate/cckfield/CckFieldPluginBase.php
@@ -21,6 +21,14 @@
 abstract class CckFieldPluginBase extends FieldPluginBase implements MigrateCckFieldInterface {
 
   /**
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
+   */
+  public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
    * Apply any custom processing to the field bundle migrations.
    *
    * @param \Drupal\migrate\Plugin\MigrationInterface $migration
@@ -30,7 +38,7 @@
    * @param array $data
    *   The array of field data from FieldValues::fieldData().
    */
-  public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     // Provide a bridge to the old method declared on the interface and now an
     // abstract method in this class.
     return $this->processCckFieldValues($migration, $field_name, $data);
diff --git a/core/modules/migrate_drupal/src/Plugin/migrate/field/FieldPluginBase.php b/core/modules/migrate_drupal/src/Plugin/migrate/field/FieldPluginBase.php
index dc115ab..ba89e12 100644
--- a/core/modules/migrate_drupal/src/Plugin/migrate/field/FieldPluginBase.php
+++ b/core/modules/migrate_drupal/src/Plugin/migrate/field/FieldPluginBase.php
@@ -20,24 +20,39 @@
 abstract class FieldPluginBase extends PluginBase implements MigrateFieldInterface {
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * alterFieldMigration() instead.
    */
   public function processField(MigrationInterface $migration) {
+    $this->alterFieldMigration($migration);
+  }
+
+  public function alterFieldMigration(MigrationInterface $migration) {
     $process[0]['map'][$this->pluginId][$this->pluginId] = $this->pluginId;
     $migration->mergeProcessOfProperty('type', $process);
   }
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * alterFieldInstanceMigration() instead.
    */
   public function processFieldInstance(MigrationInterface $migration) {
+    $this->alterFieldInstanceMigration($migration);
+  }
+
+  public function alterFieldInstanceMigration(MigrationInterface $migration) {
     // Nothing to do by default with field instances.
   }
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * alterFieldWidgetMigration() instead.
    */
   public function processFieldWidget(MigrationInterface $migration) {
+    $this->alterFieldWidgetMigration($migration);
+  }
+
+  public function alterFieldWidgetMigration(MigrationInterface $migration) {
     $process = [];
     foreach ($this->getFieldWidgetMap() as $source_widget => $destination_widget) {
       $process['type']['map'][$source_widget] = $destination_widget;
@@ -77,9 +92,14 @@ public function getFieldWidgetMap() {
   }
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * alterFieldFormatterMigration() instead.
    */
   public function processFieldFormatter(MigrationInterface $migration) {
+    $this->alterFieldFormatterMigration($migration);
+  }
+
+  public function alterFieldFormatterMigration(MigrationInterface $migration) {
     $process = [];
 
     // Some migrate field plugin IDs are prefixed with 'd6_' or 'd7_'. Since the
@@ -93,9 +113,17 @@ public function processFieldFormatter(MigrationInterface $migration) {
   }
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
    */
   public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     $process = [
       'plugin' => 'get',
       'source' => $field_name,
diff --git a/core/modules/migrate_drupal/src/Plugin/migrate/field/NodeReference.php b/core/modules/migrate_drupal/src/Plugin/migrate/field/NodeReference.php
index e8c2dd5..6183958 100644
--- a/core/modules/migrate_drupal/src/Plugin/migrate/field/NodeReference.php
+++ b/core/modules/migrate_drupal/src/Plugin/migrate/field/NodeReference.php
@@ -18,9 +18,17 @@
 class NodeReference extends FieldPluginBase {
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
    */
   public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     $process = [
       'plugin' => 'sub_process',
       'source' => $field_name,
diff --git a/core/modules/migrate_drupal/src/Plugin/migrate/field/UserReference.php b/core/modules/migrate_drupal/src/Plugin/migrate/field/UserReference.php
index b42d94c..d2d1593 100644
--- a/core/modules/migrate_drupal/src/Plugin/migrate/field/UserReference.php
+++ b/core/modules/migrate_drupal/src/Plugin/migrate/field/UserReference.php
@@ -18,9 +18,17 @@
 class UserReference extends FieldPluginBase {
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
    */
   public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     $process = [
       'plugin' => 'sub_process',
       'source' => $field_name,
diff --git a/core/modules/node/src/Plugin/migrate/D6NodeDeriver.php b/core/modules/node/src/Plugin/migrate/D6NodeDeriver.php
index 536303e..94c759b 100644
--- a/core/modules/node/src/Plugin/migrate/D6NodeDeriver.php
+++ b/core/modules/node/src/Plugin/migrate/D6NodeDeriver.php
@@ -165,7 +165,7 @@ public function getDerivativeDefinitions($base_plugin_definition) {
                 $this->fieldPluginCache[$field_type] = $this->fieldPluginManager->createInstance($plugin_id, ['core' => 6], $migration);
               }
               $this->fieldPluginCache[$field_type]
-                ->processFieldValues($migration, $field_name, $info);
+                ->defineValueProcessPipeline($migration, $field_name, $info);
             }
             catch (PluginNotFoundException $ex) {
               try {
diff --git a/core/modules/node/src/Plugin/migrate/D7NodeDeriver.php b/core/modules/node/src/Plugin/migrate/D7NodeDeriver.php
index 28c61b8..25099cf 100644
--- a/core/modules/node/src/Plugin/migrate/D7NodeDeriver.php
+++ b/core/modules/node/src/Plugin/migrate/D7NodeDeriver.php
@@ -168,7 +168,7 @@ public function getDerivativeDefinitions($base_plugin_definition) {
                 $this->fieldPluginCache[$field_type] = $this->fieldPluginManager->createInstance($plugin_id, ['core' => 7], $migration);
               }
               $this->fieldPluginCache[$field_type]
-                ->processFieldValues($migration, $field_name, $info);
+                ->defineValueProcessPipeline($migration, $field_name, $info);
             }
             catch (PluginNotFoundException $ex) {
               try {
diff --git a/core/modules/taxonomy/src/Plugin/migrate/D7TaxonomyTermDeriver.php b/core/modules/taxonomy/src/Plugin/migrate/D7TaxonomyTermDeriver.php
index 561a9af..566cf3b 100644
--- a/core/modules/taxonomy/src/Plugin/migrate/D7TaxonomyTermDeriver.php
+++ b/core/modules/taxonomy/src/Plugin/migrate/D7TaxonomyTermDeriver.php
@@ -137,7 +137,7 @@ public function getDerivativeDefinitions($base_plugin_definition) {
                 $this->fieldPluginCache[$field_type] = $this->fieldPluginManager->createInstance($plugin_id, ['core' => 7], $migration);
               }
               $this->fieldPluginCache[$field_type]
-                ->processFieldValues($migration, $field_name, $info);
+                ->defineValueProcessPipeline($migration, $field_name, $info);
             }
             catch (PluginNotFoundException $ex) {
               try {
diff --git a/core/modules/taxonomy/src/Plugin/migrate/field/TaxonomyTermReference.php b/core/modules/taxonomy/src/Plugin/migrate/field/TaxonomyTermReference.php
index 2f41e51..1febdd8 100644
--- a/core/modules/taxonomy/src/Plugin/migrate/field/TaxonomyTermReference.php
+++ b/core/modules/taxonomy/src/Plugin/migrate/field/TaxonomyTermReference.php
@@ -19,9 +19,17 @@
 class TaxonomyTermReference extends FieldPluginBase {
 
   /**
-   * {@inheritdoc}
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
    */
   public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) {
     $process = [
       'plugin' => 'sub_process',
       'source' => $field_name,
diff --git a/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/cckfield/TaxonomyTermReferenceCckTest.php b/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/cckfield/TaxonomyTermReferenceCckTest.php
index 437fd67..24df65d 100644
--- a/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/cckfield/TaxonomyTermReferenceCckTest.php
+++ b/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/cckfield/TaxonomyTermReferenceCckTest.php
@@ -48,6 +48,22 @@ protected function setUp() {
    * @covers ::processCckFieldValues
    */
   public function testProcessCckFieldValues() {
+    $this->plugin->processCckFieldValues($this->migration, 'somefieldname', []);
+
+    $expected = [
+      'plugin' => 'iterator',
+      'source' => 'somefieldname',
+      'process' => [
+        'target_id' => 'tid',
+      ],
+    ];
+    $this->assertSame($expected, $this->migration->getProcess());
+  }
+
+  /**
+   * @covers ::processFieldValues
+   */
+  public function testProcessFieldValues() {
     $this->plugin->processFieldValues($this->migration, 'somefieldname', []);
 
     $expected = [
@@ -60,4 +76,20 @@ public function testProcessCckFieldValues() {
     $this->assertSame($expected, $this->migration->getProcess());
   }
 
+  /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testDefineValueProcessPipeline() {
+    $this->plugin->defineValueProcessPipeline($this->migration, 'somefieldname', []);
+
+    $expected = [
+      'plugin' => 'iterator',
+      'source' => 'somefieldname',
+      'process' => [
+        'target_id' => 'tid',
+      ],
+    ];
+    $this->assertSame($expected, $this->migration->getProcess());
+  }
+
 }
diff --git a/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/field/TaxonomyTermReferenceFieldTest.php b/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/field/TaxonomyTermReferenceFieldTest.php
index 8422293..31ff5df 100644
--- a/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/field/TaxonomyTermReferenceFieldTest.php
+++ b/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/field/TaxonomyTermReferenceFieldTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's processFieldValues() method will call
+    // The plugin's defineValueProcessPipeline() method will call
     // setProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to setProcessOfProperty().
@@ -59,4 +59,20 @@ public function testProcessFieldValues() {
     $this->assertSame($expected, $this->migration->getProcess());
   }
 
+  /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testDefineValueProcessPipeline() {
+    $this->plugin->defineValueProcessPipeline($this->migration, 'somefieldname', []);
+
+    $expected = [
+      'plugin' => 'iterator',
+      'source' => 'somefieldname',
+      'process' => [
+        'target_id' => 'tid',
+      ],
+    ];
+    $this->assertSame($expected, $this->migration->getProcess());
+  }
+
 }
diff --git a/core/modules/text/src/Plugin/migrate/field/d6/TextField.php b/core/modules/text/src/Plugin/migrate/field/d6/TextField.php
index aa324b6..82396ab 100644
--- a/core/modules/text/src/Plugin/migrate/field/d6/TextField.php
+++ b/core/modules/text/src/Plugin/migrate/field/d6/TextField.php
@@ -42,9 +42,17 @@ public function getFieldFormatterMap() {
   }
 
   /**
+   * @deprecated in Drupal 8.5.x, to be removed before Drupal 9.0.x. Use
+   * defineValueProcessPipeline() instead.
+   */
+  public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+    return $this->defineValueProcessPipeline($migration, $field_name, $data);
+  }
+
+  /**
    * {@inheritdoc}
    */
-  public function processFieldValues(MigrationInterface $migration, $field_name, $field_info) {
+  public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $field_info) {
     $widget_type = isset($field_info['widget_type']) ? $field_info['widget_type'] : $field_info['widget']['type'];
 
     if ($widget_type == 'optionwidgets_onoff') {
diff --git a/core/modules/text/tests/src/Unit/Migrate/d6/TextFieldTest.php b/core/modules/text/tests/src/Unit/Migrate/d6/TextFieldTest.php
index 8bf5d2a..c032b56 100644
--- a/core/modules/text/tests/src/Unit/Migrate/d6/TextFieldTest.php
+++ b/core/modules/text/tests/src/Unit/Migrate/d6/TextFieldTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's processFieldValues() method will call
+    // The plugin's defineValueProcessPipeline() method will call
     // setProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to setProcessOfProperty().
@@ -69,6 +69,29 @@ public function testProcessFilteredTextFieldValues() {
   }
 
   /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testFilteredTextValueProcessPipeline() {
+    $field_info = [
+      'widget_type' => 'text_textfield',
+    ];
+    $this->plugin->defineValueProcessPipeline($this->migration, 'body', $field_info);
+
+    $process = $this->migration->getProcess();
+    $this->assertSame('iterator', $process['plugin']);
+    $this->assertSame('body', $process['source']);
+    $this->assertSame('value', $process['process']['value']);
+
+    // Ensure that filter format IDs will be looked up in the filter format
+    // migrations.
+    $lookup = $process['process']['format'][2];
+    $this->assertSame('migration', $lookup['plugin']);
+    $this->assertContains('d6_filter_format', $lookup['migration']);
+    $this->assertContains('d7_filter_format', $lookup['migration']);
+    $this->assertSame('format', $lookup['source']);
+  }
+
+  /**
    * @covers ::processFieldValues
    */
   public function testProcessBooleanTextImplicitValues() {
@@ -94,6 +117,31 @@ public function testProcessBooleanTextImplicitValues() {
   }
 
   /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testBooleanTextImplicitValueProcessPipeline() {
+    $info = [
+      'widget_type' => 'optionwidgets_onoff',
+      'global_settings' => [
+        'allowed_values' => "foo\nbar",
+      ]
+    ];
+    $this->plugin->defineValueProcessPipeline($this->migration, 'field', $info);
+
+    $expected = [
+      'value' => [
+        'plugin' => 'static_map',
+        'source' => 'value',
+        'default_value' => 0,
+        'map' => [
+          'bar' => 1,
+        ],
+      ],
+    ];
+    $this->assertSame($expected, $this->migration->getProcess()['process']);
+  }
+
+  /**
    * @covers ::processFieldValues
    */
   public function testProcessBooleanTextExplicitValues() {
@@ -119,6 +167,31 @@ public function testProcessBooleanTextExplicitValues() {
   }
 
   /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testBooleanTextExplicitValueProcessPipeline() {
+    $info = [
+      'widget_type' => 'optionwidgets_onoff',
+      'global_settings' => [
+        'allowed_values' => "foo|Foo\nbaz|Baz",
+      ]
+    ];
+    $this->plugin->defineValueProcessPipeline($this->migration, 'field', $info);
+
+    $expected = [
+      'value' => [
+        'plugin' => 'static_map',
+        'source' => 'value',
+        'default_value' => 0,
+        'map' => [
+          'baz' => 1,
+        ],
+      ],
+    ];
+    $this->assertSame($expected, $this->migration->getProcess()['process']);
+  }
+
+  /**
    * Data provider for testGetFieldType().
    */
   public function getFieldTypeProvider() {
diff --git a/core/modules/text/tests/src/Unit/Plugin/migrate/field/d6/TextFieldTest.php b/core/modules/text/tests/src/Unit/Plugin/migrate/field/d6/TextFieldTest.php
index b79a0b5..44acade 100644
--- a/core/modules/text/tests/src/Unit/Plugin/migrate/field/d6/TextFieldTest.php
+++ b/core/modules/text/tests/src/Unit/Plugin/migrate/field/d6/TextFieldTest.php
@@ -32,7 +32,7 @@ protected function setUp() {
 
     $migration = $this->prophesize(MigrationInterface::class);
 
-    // The plugin's processFieldValues() method will call
+    // The plugin's defineValueProcessPipeline() method will call
     // setProcessOfProperty() and return nothing. So, in order to examine the
     // process pipeline created by the plugin, we need to ensure that
     // getProcess() always returns the last input to setProcessOfProperty().
@@ -68,6 +68,29 @@ public function testProcessFilteredTextFieldValues() {
   }
 
   /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testFilteredTextValueProcessPipeline() {
+    $field_info = [
+      'widget_type' => 'text_textfield',
+    ];
+    $this->plugin->defineValueProcessPipeline($this->migration, 'body', $field_info);
+
+    $process = $this->migration->getProcess();
+    $this->assertSame('iterator', $process['plugin']);
+    $this->assertSame('body', $process['source']);
+    $this->assertSame('value', $process['process']['value']);
+
+    // Ensure that filter format IDs will be looked up in the filter format
+    // migrations.
+    $lookup = $process['process']['format'][2];
+    $this->assertSame('migration', $lookup['plugin']);
+    $this->assertContains('d6_filter_format', $lookup['migration']);
+    $this->assertContains('d7_filter_format', $lookup['migration']);
+    $this->assertSame('format', $lookup['source']);
+  }
+
+  /**
    * @covers ::processFieldValues
    */
   public function testProcessBooleanTextImplicitValues() {
@@ -93,6 +116,31 @@ public function testProcessBooleanTextImplicitValues() {
   }
 
   /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testBooleanTextImplicitValueProcessPipeline() {
+    $info = [
+      'widget_type' => 'optionwidgets_onoff',
+      'global_settings' => [
+        'allowed_values' => "foo\nbar",
+      ]
+    ];
+    $this->plugin->defineValueProcessPipeline($this->migration, 'field', $info);
+
+    $expected = [
+      'value' => [
+        'plugin' => 'static_map',
+        'source' => 'value',
+        'default_value' => 0,
+        'map' => [
+          'bar' => 1,
+        ],
+      ],
+    ];
+    $this->assertSame($expected, $this->migration->getProcess()['process']);
+  }
+
+  /**
    * @covers ::processFieldValues
    */
   public function testProcessBooleanTextExplicitValues() {
@@ -118,6 +166,31 @@ public function testProcessBooleanTextExplicitValues() {
   }
 
   /**
+   * @covers ::defineValueProcessPipeline
+   */
+  public function testBooleanTextExplicitValueProcessPipeline() {
+    $info = [
+      'widget_type' => 'optionwidgets_onoff',
+      'global_settings' => [
+        'allowed_values' => "foo|Foo\nbaz|Baz",
+      ]
+    ];
+    $this->plugin->defineValueProcessPipeline($this->migration, 'field', $info);
+
+    $expected = [
+      'value' => [
+        'plugin' => 'static_map',
+        'source' => 'value',
+        'default_value' => 0,
+        'map' => [
+          'baz' => 1,
+        ],
+      ],
+    ];
+    $this->assertSame($expected, $this->migration->getProcess()['process']);
+  }
+
+  /**
    * Data provider for testGetFieldType().
    */
   public function getFieldTypeProvider() {
diff --git a/core/modules/user/src/Plugin/migrate/User.php b/core/modules/user/src/Plugin/migrate/User.php
index 5316259..d918932 100644
--- a/core/modules/user/src/Plugin/migrate/User.php
+++ b/core/modules/user/src/Plugin/migrate/User.php
@@ -37,7 +37,7 @@ public function getProcess() {
             }
             $info = $row->getSource();
             $this->fieldPluginCache[$field_type]
-              ->processFieldValues($this, $field_name, $info);
+              ->defineValueProcessPipeline($this, $field_name, $info);
           }
           else {
             if ($this->cckPluginManager->hasDefinition($field_type)) {