protected function _sourceUsesSurvey($source)
    {
        switch ($source) {
            case self::APPOINTMENT_TABLE:
            case self::NO_TABLE:
            case self::RESPONDENT_TRACK_TABLE:
                return false;

            default:
                return true;
        }
    }
protected function _sourceUsesSurvey($source)
    {
        switch ($source) {
            case self::APPOINTMENT_TABLE:
            case self::NO_TABLE:
            case self::RESPONDENT_TRACK_TABLE:
                return false;

            default:
                return true;
        }
    }
protected function _sourceUsesSurvey ( $ source ) { switch ( $ source ) { case self :: APPOINTMENT_TABLE : case self :: NO_TABLE : case self :: RESPONDENT_TRACK_TABLE : return false ; default : return true ; } }
Returns true if the source uses values from another token.

@param string $source The current source
@return boolean
Returns true if the source uses values from another token .