code: protected static function look_if_process_files( $type ) {
  
  		if ( is_string( self::$unify ) || isset( self::$unify[ "{$type}s" ] ) ) {
  			return self::unify_files(
  				self::prepare_files( $type )
  			);
  		}
  	}
docs: Look whether to process files to minify or unify files.
  
  @since 1.0.4
  
  @param string $type → script|style.
  
  @return boolean