constructor(originalResponse, getter, offset, count, options = {}) {
        this.originalResponse = originalResponse;
        this.blobDownloadStream = new RetriableReadableStream(this.originalResponse.readableStreamBody, getter, offset, count, options);
    }
Creates an instance of BlobDownloadResponse.

@param originalResponse -
@param getter -
@param offset -
@param count -
@param options -