protected function searchForNonNamespacedClass()
    {
        $filename = $this->_classFilename;

        foreach($this->_includePaths as $includePath)
        {
            $filePath = $includePath . DIRECTORY_SEPARATOR . $filename;

            if(file_exists($filePath) == true)
            {
                require($filename);

                return true;
            }
        }

        return false;
    }