public function split($format = null, $path = null)
	{
		$format = $format ?: 'php';
		$path   = $path   ?: PATH_APP . DS . 'config';

		$writer = new \Hubzero\Config\FileWriter(
			$format,
			$path
		);

		foreach ($this->map as $group => $values)
		{
			$contents = array();
			foreach ($values as $key)
			{
				$contents[$key] = $this->get($group . '.' . $key);
			}

			$writer->write($contents, $group);
		}
	}