protected function processSubpackage(PHP_CodeSniffer_File $phpcsFile, array $tags)
	{
		$tokens = $phpcsFile->getTokens();

		foreach ($tags as $tag)
		{
			if ($tokens[($tag + 2)]['code'] !== T_DOC_COMMENT_STRING)
			{
				// No content.
				continue;
			}

			$content = $tokens[($tag + 2)]['content'];

			// Is the subpackage included and empty.
			if (empty($content) || $content == '')
			{
				$error     = 'if included, @subpackage tag must contain a name';
				$phpcsFile->addError($error, $tag, 'EmptySubpackage');
			}
		}//end foreach
	}