diff --git a/core/lib/Drupal/Core/TypedData/ParentAwareInterface.php b/core/lib/Drupal/Core/TypedData/ParentAwareInterface.php
new file mode 100644
index 0000000..126ddb8
--- /dev/null
+++ b/core/lib/Drupal/Core/TypedData/ParentAwareInterface.php
@@ -0,0 +1,72 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\TypedData\ParentAwareInterface.
+ */
+
+namespace Drupal\Core\TypedData;
+
+/**
+ * Interface for typed data objects that are aware of its own property name and
+ * parent context.
+ */
+interface ParentAwareInterface {
+
+  /**
+   * Returns the name of a property or item.
+   *
+   * @return string
+   *   If the data is a property of some complex data, the name of the property.
+   *   If the data is an item of a list, the name is the numeric position of the
+   *   item in the list, starting with 0. Otherwise, NULL is returned.
+   */
+  public function getName();
+
+  /**
+   * Returns the parent data structure; i.e. either complex data or a list.
+   *
+   * @return \Drupal\Core\TypedData\ComplexDataInterface|\Drupal\Core\TypedData\ListInterface
+   *   The parent data structure, either complex data or a list; or NULL if this
+   *   is the root of the typed data tree.
+   */
+  public function getParent();
+
+  /**
+   * Returns the root of the typed data tree.
+   *
+   * Returns the root data for a tree of typed data objects; e.g. for an entity
+   * field item the root of the tree is its parent entity object.
+   *
+   * @return \Drupal\Core\TypedData\ComplexDataInterface|\Drupal\Core\TypedData\ListInterface
+   *   The root data structure, either complex data or a list.
+   */
+  public function getRoot();
+
+  /**
+   * Returns the property path of the data.
+   *
+   * The trail of property names relative to the root of the typed data tree,
+   * separated by dots; e.g. 'field_text.0.format'.
+   *
+   * @return string
+   *   The property path relative to the root of the typed tree, or an empty
+   *   string if this is the root.
+   */
+  public function getPropertyPath();
+
+  /**
+   * Sets the context of a property or item via a context aware parent.
+   *
+   * This method is supposed to be called by the factory only.
+   *
+   * @param string $name
+   *   (optional) The name of the property or the delta of the list item,
+   *   or NULL if it is the root of a typed data tree. Defaults to NULL.
+   * @param \Drupal\Core\TypedData\TypedDataInterface $parent
+   *   (optional) The parent object of the data property, or NULL if it is the
+   *   root of a typed data tree. Defaults to NULL.
+   */
+  public function setContext($name = NULL, TypedDataInterface $parent = NULL);
+
+}
diff --git a/core/lib/Drupal/Core/TypedData/TypedData.php b/core/lib/Drupal/Core/TypedData/TypedData.php
index 8bfa215..4cad198 100644
--- a/core/lib/Drupal/Core/TypedData/TypedData.php
+++ b/core/lib/Drupal/Core/TypedData/TypedData.php
@@ -15,7 +15,7 @@
  * Classes deriving from this base class have to declare $value
  * or override getValue() or setValue().
  */
-abstract class TypedData implements TypedDataInterface, PluginInspectionInterface {
+abstract class TypedData implements TypedDataInterface, PluginInspectionInterface, ValidatableInterface, ParentAwareInterface {
 
   /**
    * The data definition.
diff --git a/core/lib/Drupal/Core/TypedData/TypedDataInterface.php b/core/lib/Drupal/Core/TypedData/TypedDataInterface.php
index 96229b6..755b322 100644
--- a/core/lib/Drupal/Core/TypedData/TypedDataInterface.php
+++ b/core/lib/Drupal/Core/TypedData/TypedDataInterface.php
@@ -61,24 +61,6 @@ public function setValue($value, $notify = TRUE);
   public function getString();
 
   /**
-   * Gets a list of validation constraints.
-   *
-   * @return array
-   *   Array of constraints, each being an instance of
-   *   \Symfony\Component\Validator\Constraint.
-   */
-  public function getConstraints();
-
-  /**
-   * Validates the currently set data value.
-   *
-   * @return \Symfony\Component\Validator\ConstraintViolationListInterface
-   *   A list of constraint violations. If the list is empty, validation
-   *   succeeded.
-   */
-  public function validate();
-
-  /**
    * Applies the default value.
    *
    * @param bool $notify
@@ -90,60 +72,4 @@ public function validate();
    *   Returns itself to allow for chaining.
    */
   public function applyDefaultValue($notify = TRUE);
-
-  /**
-   * Returns the name of a property or item.
-   *
-   * @return string
-   *   If the data is a property of some complex data, the name of the property.
-   *   If the data is an item of a list, the name is the numeric position of the
-   *   item in the list, starting with 0. Otherwise, NULL is returned.
-   */
-  public function getName();
-
-  /**
-   * Returns the parent data structure; i.e. either complex data or a list.
-   *
-   * @return \Drupal\Core\TypedData\ComplexDataInterface|\Drupal\Core\TypedData\ListInterface
-   *   The parent data structure, either complex data or a list; or NULL if this
-   *   is the root of the typed data tree.
-   */
-  public function getParent();
-
-  /**
-   * Returns the root of the typed data tree.
-   *
-   * Returns the root data for a tree of typed data objects; e.g. for an entity
-   * field item the root of the tree is its parent entity object.
-   *
-   * @return \Drupal\Core\TypedData\ComplexDataInterface|\Drupal\Core\TypedData\ListInterface
-   *   The root data structure, either complex data or a list.
-   */
-  public function getRoot();
-
-  /**
-   * Returns the property path of the data.
-   *
-   * The trail of property names relative to the root of the typed data tree,
-   * separated by dots; e.g. 'field_text.0.format'.
-   *
-   * @return string
-   *   The property path relative to the root of the typed tree, or an empty
-   *   string if this is the root.
-   */
-  public function getPropertyPath();
-
-  /**
-   * Sets the context of a property or item via a context aware parent.
-   *
-   * This method is supposed to be called by the factory only.
-   *
-   * @param string $name
-   *   (optional) The name of the property or the delta of the list item,
-   *   or NULL if it is the root of a typed data tree. Defaults to NULL.
-   * @param \Drupal\Core\TypedData\TypedDataInterface $parent
-   *   (optional) The parent object of the data property, or NULL if it is the
-   *   root of a typed data tree. Defaults to NULL.
-   */
-  public function setContext($name = NULL, TypedDataInterface $parent = NULL);
 }
diff --git a/core/lib/Drupal/Core/TypedData/ValidatableInterface.php b/core/lib/Drupal/Core/TypedData/ValidatableInterface.php
new file mode 100644
index 0000000..ac0af19
--- /dev/null
+++ b/core/lib/Drupal/Core/TypedData/ValidatableInterface.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\TypedData\ValidatableInterface.
+ */
+
+namespace Drupal\Core\TypedData;
+
+/**
+ * Interface for checking access.
+ */
+interface ValidatableInterface {
+
+  /**
+   * Gets a list of validation constraints.
+   *
+   * @return array
+   *   Array of constraints, each being an instance of
+   *   \Symfony\Component\Validator\Constraint.
+   */
+  public function getConstraints();
+
+  /**
+   * Validates the currently set data value.
+   *
+   * @return \Symfony\Component\Validator\ConstraintViolationListInterface
+   *   A list of constraint violations. If the list is empty, validation
+   *   succeeded.
+   */
+  public function validate();
+
+}