protected function _extractContent($tokenId, $tokens) {
		$token = $tokens[$tokenId];
		$body = $this->_controlContent($tokenId, $tokens);
		$line = $token['line'];
		while (--$tokenId >= 0 && $tokens[$tokenId]['line'] === $line) {
			$body = $tokens[$tokenId]['content'] . $body;
		}
		return $body;
	}