protected function get_file_name( $class ) {
		if ( $class ) {
			$file   = explode( '\\', $class );
			$file   = strtolower( end( $file ) );
			$file__ = str_replace( '_', '-', $file );
			$files  = array(
				$file . '.php', // File Name With _.
				$file__ . '.php', // File Name With - which is replaced by _.
				'class-' . $file__ . '.php', // File name With Class Prefixed.
				'class_' . $file__ . '.php', // File Name With - which is replaced by _.
			);
			return $files;
		}
		return false;
	}