@Override
	public boolean subMask(byte[] msk) throws IncompatibleMaskException {
		if (msk == null)
			throw new IncompatibleMaskException();
		if (mask.length < msk.length)
			return false;
		for (int i = 0; i < msk.length; i++) {
			byte b = mask[i];
			b ^= 0x0ff;
			b &= msk[i];
			if (0 != b)
				return false;
		}
		return true;
	}
@see ghidra.program.model.lang.Mask#subMask(byte[])
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/lang/MaskImpl.java