/**
  * @param string $filename_
  *
  * @return boolean
  */
 public static function isImageFileName($filename_)
 {
     return self::isImageFileExtension(\io\fileExtension($filename_));
 }
 /**
  * @param string $filename_
  *
  * @return string
  */
 public static function fileExtension($filename_)
 {
     return \io\fileExtension($filename_);
 }
 /**
  * @return string
  */
 public function getExtension()
 {
     return \io\fileExtension($this->m_pathAsString);
 }