private static void validateBlockLength(
        final Node node, final long specifiedBlockLength, final long computedBlockLength)
    {
        if (0 != specifiedBlockLength && computedBlockLength > specifiedBlockLength)
        {
            final String msg = "specified blockLength provides insufficient space " +
                computedBlockLength + " > " + specifiedBlockLength;

            handleError(node, msg);
        }
    }
Return the encodedLength of the {@link Message} in bytes including any padding.

@return the encodedLength of the {@link Message} in bytes including any padding.
sbe-tool/src/main/java/uk/co/real_logic/sbe/xml/Message.java