src/vs/platform/userDataSync/common/abstractSynchronizer.ts/AbstractSynchroniser/resetLocal
class AbstractSynchroniser:	async resetLocal(): Promise<void> {
		this.storageService.remove(this.lastSyncUserDataStateKey, StorageScope.APPLICATION);
		try {
			await this.fileService.del(this.lastSyncResource);
		} catch (e) {
			this.logService.error(e);
		}
	}