private void fireInvalidated() {
		for (InvalidatedListener listener : invalidatedListeners) {
			listener.dataTypeManagerInvalidated(this);
		}
	}
Get the datatype conflict handler to be used when resolving
datatype dependencies

@return dependency datatype conflict handler
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/data/DataTypeManagerDB.java