...\DocBlock\Tags\Param: to string is not working for e.g. &$errno

[voku]

If I try to convert \phpDocumentor\Reflection\DocBlock\Tags\Param into string I mostly get the full string, but if there is an "&" before the variable I see nothing, is this an expected behavior or a bug?

e.g.:

        /**
         * Open Internet or Unix domain socket connection
         * @link https://php.net/manual/en/function.fsockopen.php
         * @param string $hostname <p>
         * If you have compiled in OpenSSL support, you may prefix the
         * hostname with either ssl://
         * or tls:// to use an SSL or TLS client connection
         * over TCP/IP to connect to the remote host.
         * </p>
         * @param int $port [optional] <p>
         * The port number.
         * </p>
         * @param int &$errno [optional] <p>
         * If provided, holds the system level error number that occurred in the
         * system-level connect() call.
         * </p>
         * <p>
         * If the value returned in errno is
         * 0 and the function returned false, it is an
         * indication that the error occurred before the
         * connect() call. This is most likely due to a
         * problem initializing the socket.
         * </p>
         * @param string &$errstr [optional] <p>
         * The error message as a string.
         * </p>
         * @param float $timeout [optional] <p>
         * The connection timeout, in seconds.
         * </p>
         * <p>
         * If you need to set a timeout for reading/writing data over the
         * socket, use stream_set_timeout, as the
         * timeout parameter to
         * fsockopen only applies while connecting the
         * socket.
         * </p>
         * @return resource|false fsockopen returns a file pointer which may be used
         * together with the other file functions (such as
         * fgets, fgetss,
         * fwrite, fclose, and
         * feof). If the call fails, it will return false
         */
        function fsockopen ($hostname, $port = null, &$errno = null, &$errstr = null, $timeout = null) { /** ... */ };