private void combineSymbolMask(ConstructState constructState, byte[] mask) {
		Constructor c = constructState.getConstructor();
		for (String piece : c.getPrintPieces()) {
			if (!piece.startsWith("\n")) {
				continue;
			}
			int opIndex = piece.charAt(1) - 'A';
			combineOperandMask(constructState, c.getOperand(opIndex), mask);
		}
	}
Get the byte value mask corresponding to the specified operand.
@param opIndex operand index within the instruction representation
@return byte mask or null if operand does not have a corresponding sub-constructor or attach
@throws IllegalStateException if prototype parse failed
@throws IndexOutOfBoundsException if opIndex is not a valid operand index
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/processors/sleigh/SleighDebugLogger.java