src/vs/workbench/services/workingCopy/common/workingCopyHistoryService.ts/WorkingCopyHistoryService/doMoveEntries
class WorkingCopyHistoryService:	private async doMoveEntries(model: WorkingCopyHistoryModel, source: SaveSource, sourceWorkingCopyResource: URI, targetWorkingCopyResource: URI): Promise<URI> {

		// Move to target via model
		await model.moveEntries(targetWorkingCopyResource, source, CancellationToken.None);

		// Update model in our map
		this.models.delete(sourceWorkingCopyResource);
		this.models.set(targetWorkingCopyResource, model);

		return targetWorkingCopyResource;
	}