/**
  * The title callback for the add activity form.
  *
  * @param \Drupal\crm_core_activity\Entity\ActivityType $crm_core_activity_type
  *   The activity type.
  *
  * @return string
  *   The page title.
  */
 public function addPageTitle(ActivityType $crm_core_activity_type)
 {
     return $this->t('Add new Activity @name', array('@name' => $crm_core_activity_type->label()));
 }