src/vs/workbench/services/workingCopy/common/workingCopyBackupService.ts/InMemoryWorkingCopyBackupService/resolve
class InMemoryWorkingCopyBackupService:	async resolve<T extends IWorkingCopyBackupMeta>(identifier: IWorkingCopyIdentifier): Promise<IResolvedWorkingCopyBackup<T> | undefined> {
		const backupResource = this.toBackupResource(identifier);
		const backup = this.backups.get(backupResource);
		if (backup) {
			return { value: bufferToStream(backup.content), meta: backup.meta as T | undefined };
		}

		return undefined;
	}