src/vs/editor/common/textModelEvents.ts/InternalModelContentChangeEvent/merge
class InternalModelContentChangeEvent:	public merge(other: InternalModelContentChangeEvent): InternalModelContentChangeEvent {
		const rawContentChangedEvent = ModelRawContentChangedEvent.merge(this.rawContentChangedEvent, other.rawContentChangedEvent);
		const contentChangedEvent = InternalModelContentChangeEvent._mergeChangeEvents(this.contentChangedEvent, other.contentChangedEvent);
		return new InternalModelContentChangeEvent(rawContentChangedEvent, contentChangedEvent);
	}