/**
  * Populate the history of entries for the form field if the storage module handles history.
  * @param I2CE_FormField $form_field
  * @return boolean
  */
 public function FF_populateHistory($form_field)
 {
     if ($form_field instanceof I2CE_FormField_STRING_PASS) {
         return false;
     }
     if ($form_field->hasAttribute('populated_history') && $form_field->getAttribute('populated_history')) {
         return true;
     }
     $storageMechanism = self::getStorageMechanism($form_field->getContainer()->getName());
     if (!$storageMechanism) {
         return false;
     }
     $form_field->setAttribute('populated_history', 1);
     return $storageMechanism->FF_populateHistory($form_field);
 }