src/vs/workbench/services/workingCopy/common/workingCopyBackupTracker.ts/WorkingCopyBackupTracker/discardBackup
class WorkingCopyBackupTracker:	private discardBackup(workingCopy: IWorkingCopy): void {
		this.logService.trace(`[backup tracker] discarding backup`, workingCopy.resource.toString(true), workingCopy.typeId);

		// Clear any running backup operation
		this.cancelBackup(workingCopy);

		// Forward to working copy backup service
		this.workingCopyBackupService.discardBackup(workingCopy);
	}