private function get_file_name_from_class( $class ) {
		if ( 'classmap' === static::$autoload_type ) {
			$filtered_class_name = explode( '\\', $class );
			$class_filename      = end( $filtered_class_name );
			$class_filename      = str_replace( '_', '-', $class_filename );

			return static::$filename_prefix . $class_filename . '.php';
		} else {

			return $this->psr4_get_file_name_from_class( $class );
		}
	}