@Override
	public synchronized void redo() {
		MyChangeDiff diff = redoList.removeLast();
		changedDataTypeIds.addAll(diff.changedDts);
		changedCategoryIds.addAll(diff.changedCats);
		changedSourceArchiveIds.addAll(diff.changedArchives);
		addedDataTypeIds.addAll(diff.addedDts);
		addedCategoryIds.addAll(diff.addedCats);
		addedSourceArchiveIds.addAll(diff.addedArchives);
		undoList.addLast(diff);
	}
Construct a new DataTypeArchiveChangeSet.
@param addrMap the address map.
@param numUndos the number of undo change sets to track.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/DataTypeArchiveDBChangeSet.java