protected function setFormatExt(string $file, string $format): string
    {
        return $this->c::setFileExt($file, $this->formatToExt($format));
    }
protected function setFormatExt(string $file, string $format): string
    {
        return $this->c::setFileExt($file, $this->formatToExt($format));
    }
protected function setFormatExt ( string $ file , string $ format ) : string { return $ this -> c :: setFileExt ( $ file , $ this -> formatToExt ( $ format ) ) ; }
Set format extension.

@since 17xxxx Imagick utils.

@param string $file   Image file.
@param string $format Image format.

@return string File w/ format extension.
Set format extension .