diff --git a/core/lib/Drupal/Core/Plugin/PluginFormInterface.php b/core/lib/Drupal/Core/Plugin/PluginFormInterface.php
index bdebad7..e02dba6 100644
--- a/core/lib/Drupal/Core/Plugin/PluginFormInterface.php
+++ b/core/lib/Drupal/Core/Plugin/PluginFormInterface.php
@@ -22,17 +22,13 @@
    * Plugin forms are embedded in other forms. In order to know where the plugin
    * form is located in the parent form, #parents and #array_parents must be
    * known, but these are not available during the initial build phase. In order
-   * to have these properties available when building the plugin form's elements,
-   * let buildConfigurationForm() return a form element that has a #process
+   * to have these properties available when building the plugin form's
+   * elements, let this method return a form element that has a #process
    * callback and build the rest of the form in the callback. By the time the
    * callback is executed, the element's #parents and #array_parents properties
    * will have been set by the form API. For more documentation on #parents and
    * #array_parents, see
    * https://api.drupal.org/api/drupal/developer!topics!forms_api_reference.html/8.
-   * During validation and submission, the plugin form's elements' #parents and
-   * #array_parents properties have already been populated and can be used
-   * directly to find the location of the submitted form values in the form's
-   * state.
    *
    * @param array $form
    *   An associative array containing the initial structure of the plugin form.
@@ -51,8 +47,8 @@ public function buildConfigurationForm(array $form, FormStateInterface $form_sta
    *   An associative array containing the structure of the plugin form as built
    *   by static::buildConfigurationForm().
    * @param \Drupal\Core\Form\FormStateInterface $form_state
-   *   The current state of the complete form. The values submitted for the plugin form
-   *   can be retrieved through
+   *   The current state of the complete form. The values submitted for the
+   *   plugin form can be retrieved through
    *   @code
    *   \Drupal\Component\Utility\NestedArray::getValue($form_state->getValues(), $form['#parents']);
    *   @endcode
@@ -66,8 +62,8 @@ public function validateConfigurationForm(array &$form, FormStateInterface $form
    *   An associative array containing the structure of the plugin form as built
    *   by static::buildConfigurationForm().
    * @param \Drupal\Core\Form\FormStateInterface $form_state
-   *   The current state of the complete form. The values submitted for the plugin form
-   *   can be retrieved through
+   *   The current state of the complete form. The values submitted for the
+   *   plugin form can be retrieved through
    *   @code
    *   \Drupal\Component\Utility\NestedArray::getValue($form_state->getValues(), $form['#parents']);
    *   @endcode