original_string: protected function _sourceUsesSurvey($source)
      {
          switch ($source) {
              case self::APPOINTMENT_TABLE:
              case self::NO_TABLE:
              case self::RESPONDENT_TRACK_TABLE:
                  return false;
  
              default:
                  return true;
          }
      }
code: protected function _sourceUsesSurvey($source)
      {
          switch ($source) {
              case self::APPOINTMENT_TABLE:
              case self::NO_TABLE:
              case self::RESPONDENT_TRACK_TABLE:
                  return false;
  
              default:
                  return true;
          }
      }
code_tokens: protected function _sourceUsesSurvey ( $ source ) { switch ( $ source ) { case self :: APPOINTMENT_TABLE : case self :: NO_TABLE : case self :: RESPONDENT_TRACK_TABLE : return false ; default : return true ; } }
docstring: Returns true if the source uses values from another token.
  
  @param string $source The current source
  @return boolean
docstring_tokens: Returns true if the source uses values from another token .