CopyPollerBlobClient type
定义 BlobClient 的作,beginCopyFromURL 返回的轮询程序需要这些作才能正常工作。
type CopyPollerBlobClient = Pick<BlobClient, "abortCopyFromURL" | "getProperties"> & { startCopyFromURL(copySource: string, options?: BlobStartCopyFromURLOptions) => Promise<BlobBeginCopyFromURLResponse> }