public function setFieldKeyFormat($format)
    {
        $this->validator->isFormatValid($format);
        $this->fieldKeyFormat = $format;
        return $this;
    }
public function setFieldKeyFormat($format)
    {
        $this->validator->isFormatValid($format);
        $this->fieldKeyFormat = $format;
        return $this;
    }
public function setFieldKeyFormat ( $ format ) { $ this -> validator -> isFormatValid ( $ format ) ; $ this -> fieldKeyFormat = $ format ; return $ this ; }
Sets the field key format.

@param   string  $format
@return  self
Sets the field key format .