tests/src/Traits/EntityReferenceTestTrait.php | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/tests/src/Traits/EntityReferenceTestTrait.php b/tests/src/Traits/EntityReferenceTestTrait.php
index 449039a..6a3e0b1 100644
--- a/tests/src/Traits/EntityReferenceTestTrait.php
+++ b/tests/src/Traits/EntityReferenceTestTrait.php
@@ -6,21 +6,23 @@ use Drupal\field\Entity\FieldConfig;
 use Drupal\field\Entity\FieldStorageConfig;
 
 /**
+ * Provides common functionality for the EntityReference test classes.
+ *
  * @see \Drupal\Tests\field\Traits\EntityReferenceTestTrait
  * @todo Remove when JSON API requires Drupal >=8.6
  */
 trait EntityReferenceTestTrait {
 
   /**
-   * Creates a field of an entity reference field storage on the specified bundle.
+   * Creates an entity reference field storage on the specified bundle.
    *
    * @param string $entity_type
    *   The type of entity the field will be attached to.
    * @param string $bundle
    *   The bundle name of the entity the field will be attached to.
    * @param string $field_name
-   *   The name of the field; if it already exists, a new instance of the existing
-   *   field will be created.
+   *   The name of the field; if it already exists, a new instance of the
+   *   existing field will be created.
    * @param string $field_label
    *   The label of the field.
    * @param string $target_entity_type
@@ -35,7 +37,7 @@ trait EntityReferenceTestTrait {
    *
    * @see \Drupal\Core\Entity\Plugin\EntityReferenceSelection\SelectionBase::buildConfigurationForm()
    */
-  protected function createEntityReferenceField($entity_type, $bundle, $field_name, $field_label, $target_entity_type, $selection_handler = 'default', $selection_handler_settings = [], $cardinality = 1) {
+  protected function createEntityReferenceField($entity_type, $bundle, $field_name, $field_label, $target_entity_type, $selection_handler = 'default', array $selection_handler_settings = [], $cardinality = 1) {
     // Look for or add the specified field to the requested entity bundle.
     if (!FieldStorageConfig::loadByName($entity_type, $field_name)) {
       FieldStorageConfig::create([