CopyPollerBlobClient type
從 <xref:BlobClient.beginCopyFromURL> 傳迴的輪詢器所需的 <xref:BlobClient> 定義作業。
type CopyPollerBlobClient = Pick<BlobClient> & { startCopyFromURL(copySource: string, options?: BlobStartCopyFromURLOptions) => Promise<BlobBeginCopyFromURLResponse> }