public byte []
readByteArray(int len) throws WireParseException {
	require(len);
	byte [] out = new byte[len];
	byteBuffer.get(out, 0, len);
	return out;
}
Reads a byte array of a specified length from the stream.
@return The byte array.
@throws WireParseException The end of the stream was reached.
src/main/java/core/org/xbill/DNS/DNSInput.java