src/vs/workbench/services/workingCopy/common/workingCopyBackupService.ts/WorkingCopyBackupServiceImpl/toBackupResource
class WorkingCopyBackupServiceImpl:	toBackupResource(identifier: IWorkingCopyIdentifier): URI {
		return joinPath(this.backupWorkspaceHome, identifier.resource.scheme, hashIdentifier(identifier));
	}