diff --git a/core/lib/Drupal/Core/Field/FieldItemBase.php b/core/lib/Drupal/Core/Field/FieldItemBase.php
index b5b0f3f..125b964 100644
--- a/core/lib/Drupal/Core/Field/FieldItemBase.php
+++ b/core/lib/Drupal/Core/Field/FieldItemBase.php
@@ -64,7 +64,7 @@ public function getFieldDefinition() {
    * @return array
    *   The array of settings.
    */
-  protected function getFieldSettings() {
+  protected function getSettings() {
     return $this->getFieldDefinition()->getSettings();
   }
 
@@ -77,7 +77,7 @@ protected function getFieldSettings() {
    * @return mixed
    *   The setting value.
    */
-  protected function getFieldSetting($setting_name) {
+  protected function getSetting($setting_name) {
     return $this->getFieldDefinition()->getSetting($setting_name);
   }
 
diff --git a/core/lib/Drupal/Core/Field/FieldItemList.php b/core/lib/Drupal/Core/Field/FieldItemList.php
index 1af3254..4b57c7f 100644
--- a/core/lib/Drupal/Core/Field/FieldItemList.php
+++ b/core/lib/Drupal/Core/Field/FieldItemList.php
@@ -81,6 +81,20 @@ public function getFieldDefinition() {
   /**
    * {@inheritdoc}
    */
+  public function getSettings() {
+    return $this->definition->getSettings();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getSetting($setting_name) {
+    return $this->definition->getSetting($setting_name);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
   public function filterEmptyValues() {
     if (isset($this->list)) {
       $this->list = array_values(array_filter($this->list, function($item) {
diff --git a/core/lib/Drupal/Core/Field/FieldItemListInterface.php b/core/lib/Drupal/Core/Field/FieldItemListInterface.php
index a5ae2ce..69727c9 100644
--- a/core/lib/Drupal/Core/Field/FieldItemListInterface.php
+++ b/core/lib/Drupal/Core/Field/FieldItemListInterface.php
@@ -61,6 +61,25 @@ public function getLangcode();
   public function getFieldDefinition();
 
   /**
+   * Returns the array of field settings.
+   *
+   * @return array
+   *   An array of key/value pairs.
+   */
+  public function getSettings();
+
+  /**
+   * Returns the value of a given field setting.
+   *
+   * @param string $setting_name
+   *   The setting name.
+   *
+   * @return mixed
+   *   The setting value.
+   */
+  public function getSetting($setting_name);
+
+  /**
    * Contains the default access logic of this field.
    *
    * See \Drupal\Core\Entity\EntityAccessControllerInterface::fieldAccess() for
diff --git a/core/modules/comment/lib/Drupal/comment/Plugin/Field/FieldType/CommentItem.php b/core/modules/comment/lib/Drupal/comment/Plugin/Field/FieldType/CommentItem.php
index 3145e8f..8bd7558 100644
--- a/core/modules/comment/lib/Drupal/comment/Plugin/Field/FieldType/CommentItem.php
+++ b/core/modules/comment/lib/Drupal/comment/Plugin/Field/FieldType/CommentItem.php
@@ -92,7 +92,7 @@ public static function schema(FieldDefinitionInterface $field_definition) {
   public function instanceSettingsForm(array $form, array &$form_state) {
     $element = array();
 
-    $settings = $this->getFieldSettings();
+    $settings = $this->getSettings();
 
     $entity_type = $this->getEntity()->entityType();
     $field_name = $this->getFieldDefinition()->getName();
diff --git a/core/modules/datetime/lib/Drupal/datetime/Plugin/Field/FieldType/DateTimeItem.php b/core/modules/datetime/lib/Drupal/datetime/Plugin/Field/FieldType/DateTimeItem.php
index c5a9cf7..43aa550 100644
--- a/core/modules/datetime/lib/Drupal/datetime/Plugin/Field/FieldType/DateTimeItem.php
+++ b/core/modules/datetime/lib/Drupal/datetime/Plugin/Field/FieldType/DateTimeItem.php
@@ -94,7 +94,7 @@ public function settingsForm(array $form, array &$form_state, $has_data) {
       '#type' => 'select',
       '#title' => t('Date type'),
       '#description' => t('Choose the type of date to create.'),
-      '#default_value' => $this->getFieldSetting('datetime_type'),
+      '#default_value' => $this->getSetting('datetime_type'),
       '#options' => array(
         static::DATETIME_TYPE_DATETIME => t('Date and time'),
         static::DATETIME_TYPE_DATE => t('Date only'),
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/ConfigurableEntityReferenceItem.php b/core/modules/entity_reference/lib/Drupal/entity_reference/ConfigurableEntityReferenceItem.php
index 1a2a618..9b74a5f 100644
--- a/core/modules/entity_reference/lib/Drupal/entity_reference/ConfigurableEntityReferenceItem.php
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/ConfigurableEntityReferenceItem.php
@@ -92,7 +92,7 @@ public function settingsForm(array $form, array &$form_state, $has_data) {
       '#type' => 'select',
       '#title' => t('Type of item to reference'),
       '#options' => \Drupal::entityManager()->getEntityTypeLabels(),
-      '#default_value' => $this->getFieldSetting('target_type'),
+      '#default_value' => $this->getSetting('target_type'),
       '#required' => TRUE,
       '#disabled' => $has_data,
       '#size' => 1,
@@ -108,7 +108,7 @@ public function instanceSettingsForm(array $form, array &$form_state) {
     $instance = $form_state['instance'];
 
     // Get all selection plugins for this entity type.
-    $selection_plugins = \Drupal::service('plugin.manager.entity_reference.selection')->getSelectionGroups($this->getFieldSetting('target_type'));
+    $selection_plugins = \Drupal::service('plugin.manager.entity_reference.selection')->getSelectionGroups($this->getSetting('target_type'));
     $handler_groups = array_keys($selection_plugins);
 
     $handlers = \Drupal::service('plugin.manager.entity_reference.selection')->getDefinitions();
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Field/FieldType/ConfigurableEntityReferenceFieldItemList.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Field/FieldType/ConfigurableEntityReferenceFieldItemList.php
index 9623c43..c4e0775 100644
--- a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Field/FieldType/ConfigurableEntityReferenceFieldItemList.php
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Field/FieldType/ConfigurableEntityReferenceFieldItemList.php
@@ -33,7 +33,7 @@ protected function getDefaultValue() {
         }
       }
       if ($uuids) {
-        $target_type = $this->getFieldDefinition()->getSetting('target_type');
+        $target_type = $this->getSetting('target_type');
         $entity_ids = \Drupal::entityQuery($target_type)
           ->condition('uuid', $uuids, 'IN')
           ->execute();
@@ -80,7 +80,7 @@ public function defaultValuesFormSubmit(array $element, array &$form, array &$fo
       $ids[] = $properties['target_id'];
     }
     $entities = \Drupal::entityManager()
-      ->getStorageController($this->getFieldDefinition()->getSetting('target_type'))
+      ->getStorageController($this->getSetting('target_type'))
       ->loadMultiple($ids);
 
     foreach ($default_value as $delta => $properties) {
diff --git a/core/modules/field/tests/modules/field_test/lib/Drupal/field_test/Plugin/Field/FieldType/TestItem.php b/core/modules/field/tests/modules/field_test/lib/Drupal/field_test/Plugin/Field/FieldType/TestItem.php
index 2157658..be3955f 100644
--- a/core/modules/field/tests/modules/field_test/lib/Drupal/field_test/Plugin/Field/FieldType/TestItem.php
+++ b/core/modules/field/tests/modules/field_test/lib/Drupal/field_test/Plugin/Field/FieldType/TestItem.php
@@ -79,7 +79,7 @@ public function settingsForm(array $form, array &$form_state, $has_data) {
     $form['test_field_setting'] = array(
       '#type' => 'textfield',
       '#title' => t('Field test field setting'),
-      '#default_value' => $this->getFieldSetting('test_field_setting'),
+      '#default_value' => $this->getSetting('test_field_setting'),
       '#required' => FALSE,
       '#description' => t('A dummy form element to simulate field setting.'),
     );
@@ -94,7 +94,7 @@ public function instanceSettingsForm(array $form, array &$form_state) {
     $form['test_instance_setting'] = array(
       '#type' => 'textfield',
       '#title' => t('Field test field instance setting'),
-      '#default_value' => $this->getFieldSetting('test_instance_setting'),
+      '#default_value' => $this->getSetting('test_instance_setting'),
       '#required' => FALSE,
       '#description' => t('A dummy form element to simulate field instance setting.'),
     );
@@ -109,7 +109,7 @@ public function getCacheData() {
     // To keep the test non-intrusive, only act for instances with the
     // 'test_cached_data' setting explicitly set to TRUE. Also don't add
     // anything on empty values.
-    if ($this->getFieldSetting('test_cached_data') && !$this->isEmpty()) {
+    if ($this->getSetting('test_cached_data') && !$this->isEmpty()) {
       // Set the additional value so that getValue() will return it.
       $this->additional_key = 'additional_value';
     }
diff --git a/core/modules/file/lib/Drupal/file/Plugin/Field/FieldType/FileItem.php b/core/modules/file/lib/Drupal/file/Plugin/Field/FieldType/FileItem.php
index 9bb9dd0..2318ffe 100644
--- a/core/modules/file/lib/Drupal/file/Plugin/Field/FieldType/FileItem.php
+++ b/core/modules/file/lib/Drupal/file/Plugin/Field/FieldType/FileItem.php
@@ -113,13 +113,13 @@ public function settingsForm(array $form, array &$form_state, $has_data) {
     $element['display_field'] = array(
       '#type' => 'checkbox',
       '#title' => t('Enable <em>Display</em> field'),
-      '#default_value' => $this->getFieldSetting('display_field'),
+      '#default_value' => $this->getSetting('display_field'),
       '#description' => t('The display option allows users to choose if a file should be shown when viewing the content.'),
     );
     $element['display_default'] = array(
       '#type' => 'checkbox',
       '#title' => t('Files displayed by default'),
-      '#default_value' => $this->getFieldSetting('display_default'),
+      '#default_value' => $this->getSetting('display_default'),
       '#description' => t('This setting only has an effect if the display option is enabled.'),
       '#states' => array(
         'visible' => array(
@@ -136,7 +136,7 @@ public function settingsForm(array $form, array &$form_state, $has_data) {
       '#type' => 'radios',
       '#title' => t('Upload destination'),
       '#options' => $scheme_options,
-      '#default_value' => $this->getFieldSetting('uri_scheme'),
+      '#default_value' => $this->getSetting('uri_scheme'),
       '#description' => t('Select where the final files should be stored. Private file storage has significantly more overhead than public files, but allows restricted access to files within this field.'),
       '#disabled' => $has_data,
     );
@@ -149,7 +149,7 @@ public function settingsForm(array $form, array &$form_state, $has_data) {
    */
   public function instanceSettingsForm(array $form, array &$form_state) {
     $element = array();
-    $settings = $this->getFieldSettings();
+    $settings = $this->getSettings();
 
     $element['file_directory'] = array(
       '#type' => 'textfield',
@@ -270,7 +270,7 @@ public static function validateMaxFilesize($element, &$form_state) {
    * @see token_replace()
    */
   public function getUploadLocation($data = array()) {
-    $settings = $this->getFieldSettings();
+    $settings = $this->getSettings();
     $destination = trim($settings['file_directory'], '/');
 
     // Replace tokens.
@@ -288,7 +288,7 @@ public function getUploadLocation($data = array()) {
    */
   public function getUploadValidators() {
     $validators = array();
-    $settings = $this->getFieldSettings();
+    $settings = $this->getSettings();
 
     // Cap the upload size according to the PHP limit.
     $max_filesize = parse_size(file_upload_max_size());
@@ -314,7 +314,7 @@ public function getUploadValidators() {
    *   TRUE if the item should be displayed, FALSE if not.
    */
   public function isDisplayed() {
-    if ($this->getFieldSetting('display_field')) {
+    if ($this->getSetting('display_field')) {
       return (bool) $this->display;
     }
     return TRUE;
diff --git a/core/modules/image/lib/Drupal/image/Plugin/Field/FieldType/ImageItem.php b/core/modules/image/lib/Drupal/image/Plugin/Field/FieldType/ImageItem.php
index be20c66..e7f5cf0 100644
--- a/core/modules/image/lib/Drupal/image/Plugin/Field/FieldType/ImageItem.php
+++ b/core/modules/image/lib/Drupal/image/Plugin/Field/FieldType/ImageItem.php
@@ -175,7 +175,7 @@ public function instanceSettingsForm(array $form, array &$form_state) {
     // Get base form from FileItem::instanceSettingsForm().
     $element = parent::instanceSettingsForm($form, $form_state);
 
-    $settings = $this->getFieldSettings();
+    $settings = $this->getSettings();
 
     // Add maximum and minimum resolution settings.
     $max_resolution = explode('x', $settings['max_resolution']) + array('', '');
diff --git a/core/modules/link/lib/Drupal/link/Plugin/Field/FieldType/LinkItem.php b/core/modules/link/lib/Drupal/link/Plugin/Field/FieldType/LinkItem.php
index eb9c2fc..bc28594 100644
--- a/core/modules/link/lib/Drupal/link/Plugin/Field/FieldType/LinkItem.php
+++ b/core/modules/link/lib/Drupal/link/Plugin/Field/FieldType/LinkItem.php
@@ -89,7 +89,7 @@ public function instanceSettingsForm(array $form, array &$form_state) {
     $element['title'] = array(
       '#type' => 'radios',
       '#title' => t('Allow link text'),
-      '#default_value' => $this->getFieldSetting('title'),
+      '#default_value' => $this->getSetting('title'),
       '#options' => array(
         DRUPAL_DISABLED => t('Disabled'),
         DRUPAL_OPTIONAL => t('Optional'),
diff --git a/core/modules/number/lib/Drupal/number/Plugin/Field/FieldType/DecimalItem.php b/core/modules/number/lib/Drupal/number/Plugin/Field/FieldType/DecimalItem.php
index 3bf223e..42588e8 100644
--- a/core/modules/number/lib/Drupal/number/Plugin/Field/FieldType/DecimalItem.php
+++ b/core/modules/number/lib/Drupal/number/Plugin/Field/FieldType/DecimalItem.php
@@ -66,7 +66,7 @@ public static function schema(FieldDefinitionInterface $field_definition) {
    */
   public function settingsForm(array $form, array &$form_state, $has_data) {
     $element = array();
-    $settings = $this->getFieldSettings();
+    $settings = $this->getSettings();
 
     $element['precision'] = array(
       '#type' => 'select',
@@ -92,7 +92,7 @@ public function settingsForm(array $form, array &$form_state, $has_data) {
    * {@inheritdoc}
    */
   public function preSave() {
-    $this->value = round($this->value, $this->getFieldSetting('scale'));
+    $this->value = round($this->value, $this->getSetting('scale'));
   }
 
 }
diff --git a/core/modules/number/lib/Drupal/number/Plugin/Field/FieldType/NumberItemBase.php b/core/modules/number/lib/Drupal/number/Plugin/Field/FieldType/NumberItemBase.php
index e8630be..22f2d59 100644
--- a/core/modules/number/lib/Drupal/number/Plugin/Field/FieldType/NumberItemBase.php
+++ b/core/modules/number/lib/Drupal/number/Plugin/Field/FieldType/NumberItemBase.php
@@ -26,7 +26,7 @@
    */
   public function instanceSettingsForm(array $form, array &$form_state) {
     $element = array();
-    $settings = $this->getFieldSettings();
+    $settings = $this->getSettings();
 
     $element['min'] = array(
       '#type' => 'textfield',
@@ -77,7 +77,7 @@ public function getConstraints() {
     $constraint_manager = \Drupal::typedDataManager()->getValidationConstraintManager();
     $constraints = parent::getConstraints();
 
-    $settings = $this->getFieldSettings();
+    $settings = $this->getSettings();
     $label = $this->getFieldDefinition()->getLabel();
 
     if (!empty($settings['min'])) {
diff --git a/core/modules/options/lib/Drupal/options/Plugin/Field/FieldType/ListItemBase.php b/core/modules/options/lib/Drupal/options/Plugin/Field/FieldType/ListItemBase.php
index eb0970e..3f4f1c4 100644
--- a/core/modules/options/lib/Drupal/options/Plugin/Field/FieldType/ListItemBase.php
+++ b/core/modules/options/lib/Drupal/options/Plugin/Field/FieldType/ListItemBase.php
@@ -71,8 +71,8 @@ public function settingsForm(array $form, array &$form_state, $has_data) {
     //   https://drupal.org/node/2169983.
     $field_type = $this->getFieldDefinition()->getType();
 
-    $allowed_values = $this->getFieldSetting('allowed_values');
-    $allowed_values_function = $this->getFieldSetting('allowed_values_function');
+    $allowed_values = $this->getSetting('allowed_values');
+    $allowed_values_function = $this->getSetting('allowed_values_function');
 
     if (in_array($field_type, array('list_integer', 'list_float', 'list_text'))) {
       $element['allowed_values'] = array(
@@ -213,7 +213,7 @@ public function validateAllowedValues($element, &$form_state) {
 
       // Prevent removing values currently in use.
       if ($has_data) {
-        $lost_keys = array_diff(array_keys($this->getFieldSetting('allowed_values')), array_keys($values));
+        $lost_keys = array_diff(array_keys($this->getSetting('allowed_values')), array_keys($values));
         if (_options_values_in_use($this->getEntity()->entityType(), $this->getFieldDefinition()->getName(), $lost_keys)) {
           \Drupal::formBuilder()->setError($element, $form_state, t('Allowed values list: some values are being removed while currently in use.'));
         }
diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/Field/FieldType/TaxonomyTermReferenceItem.php b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/Field/FieldType/TaxonomyTermReferenceItem.php
index 98660eb..7110723 100644
--- a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/Field/FieldType/TaxonomyTermReferenceItem.php
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/Field/FieldType/TaxonomyTermReferenceItem.php
@@ -68,12 +68,12 @@ public function getSettableValues(AccountInterface $account = NULL) {
    * {@inheritdoc}
    */
   public function getSettableOptions(AccountInterface $account = NULL) {
-    if ($callback = $this->getFieldSetting('options_list_callback')) {
+    if ($callback = $this->getSetting('options_list_callback')) {
       return call_user_func_array($callback, array($this->getFieldDefinition(), $this->getEntity()));
     }
     else {
       $options = array();
-      foreach ($this->getFieldSetting('allowed_values') as $tree) {
+      foreach ($this->getSetting('allowed_values') as $tree) {
         if ($vocabulary = entity_load('taxonomy_vocabulary', $tree['vocabulary'])) {
           if ($terms = taxonomy_get_tree($vocabulary->id(), $tree['parent'], NULL, TRUE)) {
             foreach ($terms as $term) {
@@ -131,7 +131,7 @@ public function settingsForm(array $form, array &$form_state, $has_data) {
     $element = array();
     $element['#tree'] = TRUE;
 
-    foreach ($this->getFieldSetting('allowed_values') as $delta => $tree) {
+    foreach ($this->getSetting('allowed_values') as $delta => $tree) {
       $element['allowed_values'][$delta]['vocabulary'] = array(
         '#type' => 'select',
         '#title' => t('Vocabulary'),
diff --git a/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextItem.php b/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextItem.php
index 9157ee8..93bd949 100644
--- a/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextItem.php
+++ b/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextItem.php
@@ -58,7 +58,7 @@ public function getConstraints() {
     $constraint_manager = \Drupal::typedDataManager()->getValidationConstraintManager();
     $constraints = parent::getConstraints();
 
-    if ($max_length = $this->getFieldSetting('max_length')) {
+    if ($max_length = $this->getSetting('max_length')) {
       $constraints[] = $constraint_manager->create('ComplexData', array(
         'value' => array(
           'Length' => array(
@@ -81,7 +81,7 @@ public function settingsForm(array $form, array &$form_state, $has_data) {
     $element['max_length'] = array(
       '#type' => 'number',
       '#title' => t('Maximum length'),
-      '#default_value' => $this->getFieldSetting('max_length'),
+      '#default_value' => $this->getSetting('max_length'),
       '#required' => TRUE,
       '#description' => t('The maximum length of the field in characters.'),
       '#min' => 1,
@@ -100,7 +100,7 @@ public function instanceSettingsForm(array $form, array &$form_state) {
     $element['text_processing'] = array(
       '#type' => 'radios',
       '#title' => t('Text processing'),
-      '#default_value' => $this->getFieldSetting('text_processing'),
+      '#default_value' => $this->getSetting('text_processing'),
       '#options' => array(
         t('Plain text'),
         t('Filtered text (user selects text format)'),
diff --git a/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextItemBase.php b/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextItemBase.php
index 90d86c2..158c416 100644
--- a/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextItemBase.php
+++ b/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextItemBase.php
@@ -71,7 +71,7 @@ public function getCacheData() {
     // textual property (e.g., 'value', 'summary') within this field item early
     // so that it is cached in the field cache. This avoids the need to look up
     // the sanitized value in the filter cache separately.
-    $text_processing = $this->getFieldSetting('text_processing');
+    $text_processing = $this->getSetting('text_processing');
     if (!$text_processing || filter_format_allowcache($this->get('format')->getValue())) {
       foreach ($this->getPropertyDefinitions() as $property => $definition) {
         if ($definition->getClass() == '\Drupal\text\TextProcessed') {
diff --git a/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextLongItem.php b/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextLongItem.php
index 7e378fc..934d11f 100644
--- a/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextLongItem.php
+++ b/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextLongItem.php
@@ -57,7 +57,7 @@ public function instanceSettingsForm(array $form, array &$form_state) {
     $element['text_processing'] = array(
       '#type' => 'radios',
       '#title' => t('Text processing'),
-      '#default_value' => $this->getFieldSetting('text_processing'),
+      '#default_value' => $this->getSetting('text_processing'),
       '#options' => array(
         t('Plain text'),
         t('Filtered text (user selects text format)'),
diff --git a/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextWithSummaryItem.php b/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextWithSummaryItem.php
index 36df950..3942510 100644
--- a/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextWithSummaryItem.php
+++ b/core/modules/text/lib/Drupal/text/Plugin/Field/FieldType/TextWithSummaryItem.php
@@ -95,7 +95,7 @@ public function isEmpty() {
    */
   public function instanceSettingsForm(array $form, array &$form_state) {
     $element = array();
-    $settings = $this->getFieldSettings();
+    $settings = $this->getSettings();
 
     $element['text_processing'] = array(
       '#type' => 'radios',