public function isAppointment($fieldName)
    {
        return isset($this->_trackFields[$fieldName]) &&
            (self::TYPE_APPOINTMENT == $this->_trackFields[$fieldName]['gtf_field_type']);
    }
public function isAppointment($fieldName)
    {
        return isset($this->_trackFields[$fieldName]) &&
            (self::TYPE_APPOINTMENT == $this->_trackFields[$fieldName]['gtf_field_type']);
    }
public function isAppointment ( $ fieldName ) { return isset ( $ this -> _trackFields [ $ fieldName ] ) && ( self :: TYPE_APPOINTMENT == $ this -> _trackFields [ $ fieldName ] [ 'gtf_field_type' ] ) ; }
Is the field an appointment type

@param string $fieldName
@return boolean
Is the field an appointment type