/**
  * @param Tracker_FormElement_Field_List_Bind_UsersValue $value the value of the field
  *
  * @return string
  */
 public function formatChangesetValue($value)
 {
     if ($value->getId() == 100) {
         return '';
     } else {
         return $value->fetchFormatted();
     }
 }
 /**
  * Fetch the field value in artifact to be displayed in mail
  *
  * @param Tracker_Artifact                $artifact         The artifact
  * @param Tracker_Artifact_ChangesetValue $value            The actual value of the field
  * @param string                          $format           mail format
  *
  * @return string
  */
 public function fetchMailArtifactValue(Tracker_Artifact $artifact, Tracker_Artifact_ChangesetValue $value = null, $format = 'text')
 {
     $output = '';
     $value = new Tracker_FormElement_Field_List_Bind_UsersValue($artifact->getSubmittedBy());
     switch ($format) {
         case 'html':
             $output .= $this->fetchArtifactValueReadOnly($artifact);
             break;
         default:
             $output = $this->getBind()->formatMailArtifactValue($value->getId());
             break;
     }
     return $output;
 }