@Override
	public Mask getOperandValueMask(int operandIndex) {
		if (operandMasks == null) {
			return null;
		}
		return operandMasks[operandIndex];
	}
Walk the Constructor tree gathering ConstructStates which are flow destinations
(flowStateList) flowFlags and delayslot directives
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/processors/sleigh/SleighInstructionPrototype.java