protected void addDataTypeToReplace(DataType oldDataType, DataType replacementDataType) {
		Objects.requireNonNull(oldDataType);
		Objects.requireNonNull(replacementDataType);
		if (oldDataType == replacementDataType) {
			throw new AssertionError("Invalid datatype replacement pair");
		}
		typesToReplace.add(new Pair<>(oldDataType, replacementDataType));
	}
Queue a datatype to be replaced by another datatype in response to its referenced 
datatype being replaced.
@param oldDataType datatype to be replaced
@param replacementDataType datatype which is the replacement
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/data/DataTypeManagerDB.java