public void toggleMaskState() {
		switch (state) {
			case MASKED:
				setState(OperandState.NOT_MASKED, false);
				notifySubscribers();
				break;
			case NOT_MASKED:
				setState(OperandState.MASKED, false);
				notifySubscribers();
				break;
			case NA:
				// do nothing
				break;
			case PREVIEW:
				// do nothing
				break;
		}
	}
Toggles the state of the cell between masked/unmasked. A notification is
issued to subscribers if there is a state change.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/instructionsearch/model/InstructionTableDataObject.java