public function path(){

        $args = \func_get_args();

        switch (\count($args)){

            case 1:

                $file  = $args[0];

                if ($this->isAbsolutePath($file) && \file_exists($file)) {
                    return $file;
                }

                $parts = \explode(':', $file, 2);

                if (count($parts)==2){
                    if (!isset($this->paths[$parts[0]])) return false;

                    foreach ($this->paths[$parts[0]] as &$path){
                        if (\file_exists($path.$parts[1])){
                            return $path.$parts[1];
                        }
                    }
                }

                return false;

            case 2:

                if (!isset($this->paths[$args[0]])) {
                    $this->paths[$args[0]] = [];
                }
                \array_unshift($this->paths[$args[0]], \rtrim(\str_replace(DIRECTORY_SEPARATOR, '/', $args[1]), '/').'/');

                return $this;
        }

        return null;
    }