private function resolveFilePath($path)
    {
        $path = str_replace(array($this->_protocol.'://', '/'), array('', DIRECTORY_SEPARATOR), $path);

        foreach ($this->_includeExtensions as $ext) {
            $filename = $path.$ext;
            File::resolveFilepath($filename, null, array('include_path' => $this->_classcontentdir));
            if (true === is_file($filename)) {
                return $filename;
            }
        }

        return $path;
    }