diff --git a/src/Entity/Paragraph.php b/src/Entity/Paragraph.php
index ea53154..7ef5be0 100644
--- a/src/Entity/Paragraph.php
+++ b/src/Entity/Paragraph.php
@@ -552,7 +552,9 @@ class Paragraph extends ContentEntityBase implements ParagraphInterface, EntityN
    * @param string $field_name
    *   Field definition id for paragraph.
    * @param array $options
-   *   Array of paragraph options.
+   *   (optional) An associative array of additional options.
+   *   See \Drupal\paragraphs\ParagraphInterface::getSummary() for all of the
+   *   available options.
    *
    * @return string
    *   Short summary for nested paragraphs type.
diff --git a/src/ParagraphInterface.php b/src/ParagraphInterface.php
index 728bb3c..59cad00 100644
--- a/src/ParagraphInterface.php
+++ b/src/ParagraphInterface.php
@@ -25,7 +25,9 @@ interface ParagraphInterface extends ContentEntityInterface, EntityOwnerInterfac
    * Returns short summary for paragraph.
    *
    * @param array $options
-   *   Array of paragraph options.
+   *   (optional) Array of additional options, with the following elements:
+   *   - 'show_behavior_summary': Whether the summary should contain the
+   *     behavior settings. TRUE enforces behavior settings in summary.
    *
    * @return string
    *   The text without tags.