src/vs/workbench/services/workingCopy/common/workingCopyBackupTracker.ts/WorkingCopyBackupTracker/cancelBackupOperations
class WorkingCopyBackupTracker:	protected cancelBackupOperations(): void {
		for (const [, disposable] of this.pendingBackupOperations) {
			dispose(disposable);
		}

		this.pendingBackupOperations.clear();
	}