diff --git a/core/modules/migrate/src/Entity/Migration.php b/core/modules/migrate/src/Entity/Migration.php
index 2c14c3a..8a9ec77 100644
--- a/core/modules/migrate/src/Entity/Migration.php
+++ b/core/modules/migrate/src/Entity/Migration.php
@@ -410,8 +410,8 @@ public function setProcess(array $process) {
   /**
    * {@inheritdoc}
    */
-  public function setProcessOfProperty($field_name, $process) {
-    $this->process[$field_name] = $process;
+  public function setProcessOfProperty($field_name, $process_of_property) {
+    $this->process[$field_name] = $process_of_property;
     return $this;
   }
 
diff --git a/core/modules/migrate/src/Entity/MigrationInterface.php b/core/modules/migrate/src/Entity/MigrationInterface.php
index fc575a2..a03f583 100644
--- a/core/modules/migrate/src/Entity/MigrationInterface.php
+++ b/core/modules/migrate/src/Entity/MigrationInterface.php
@@ -180,15 +180,20 @@ public function setMigrationResult($result);
   public function getMigrationResult();
 
   /**
-   * Get the current configuration describing the process plugins.
+   * Get the normalized process configuration describing the process plugins.
+   *
+   * The process configuration is always normalized. All shorthand processing
+   * will be expanded into their full representations.
+   *
+   * @see https://www.drupal.org/node/2129651#get-shorthand
    *
    * @return array
-   *   The configuration describing the process plugins.
+   *   The normalized configuration describing the process plugins.
    */
   public function getProcess();
 
   /**
-   * Set the current configuration describing the process plugins.
+   * Set the entire process configuration describing the process plugins.
    *
    * @param array $process
    *   The configuration describing the process plugins.
@@ -200,9 +205,12 @@ public function setProcess(array $process);
   /**
    * Set the process for an individual destination field.
    *
+   * This method allows you to set the processing for an individual destination
+   * field within the full process configuration.
+   *
    * @param string $field_name
    *   The field name of which to set the process.
-   * @param mixed $process
+   * @param mixed $process_of_property
    *   A valid process value, array or string.
    *
    * @return $this
@@ -210,15 +218,15 @@ public function setProcess(array $process);
    *
    * @see Drupal\migrate_drupal\Plugin\migrate\load\LoadEntity::processLinkField().
    */
-  public function setProcessOfProperty($field_name, $process);
+  public function setProcessOfProperty($field_name, $process_of_property);
 
   /**
    * Merge the process arrays for an individual field.
    *
    * @param string $field_name
-   *   The field name of which to set the process.
+   *   The field name of which to merge the process.
    * @param array $process
-   *   An array of process data.
+   *   An array of process data to be merged.
    *
    * @return $this
    *   The migration entity.