src/vs/workbench/contrib/mergeEditor/browser/model/mergeEditorModel.ts/MergeEditorModel/setHandled
class MergeEditorModel:	public setHandled(baseRange: ModifiedBaseRange, handled: boolean, tx: ITransaction): void {
		this.modifiedBaseRangeHandlingStateStores.get().get(baseRange)!.set(handled, tx);
	}