Add info on import directive

Author: pauljewellmsft

articles/storage/blobs/storage-blob-download-java.md

@@ -66,6 +66,12 @@ You can configure values in [ParallelTransferOptions](/java/api/com.azure.storag
 - `blockSize`: The maximum block size to transfer for each request. You can set this value by using the [setBlockSizeLong](/java/api/com.azure.storage.common.paralleltransferoptions#com-azure-storage-common-paralleltransferoptions-setblocksizelong(java-lang-long)) method.
 - `maxConcurrency`: The maximum number of parallel requests issued at any given time as a part of a single parallel transfer. You can set this value by using the [setMaxConcurrency](/java/api/com.azure.storage.common.paralleltransferoptions#com-azure-storage-common-paralleltransferoptions-setmaxconcurrency(java-lang-integer)) method.
 
+Add the following `import` directive to your file to use `ParallelTransferOptions`:
+
+```java
+import com.azure.storage.common.*;
+```
+
 The following code example shows how to set values for `ParallelTransferOptions` and include the options as part of a `BlobDownloadToFileOptions` instance. The values provided in this sample aren't intended to be a recommendation. To properly tune these values, you need to consider the specific needs of your app.
 
 :::code language="java" source="~/azure-storage-snippets/blobs/howto/Java/blob-devguide/blob-devguide-blobs/src/main/java/com/blobs/devguide/blobs/BlobDownload.java" id="Snippet_DownloadBlobWithTransferOptions":::