public static Builder newBuilder() {
    return DEFAULT_INSTANCE.toBuilder();
  }
<pre>
Required. Google Cloud Storage URI to output directory. For example,
`gs://bucket/directory`. The requesting user must have write permission to
the bucket. The directory will be created if it doesn't exist.
</pre>

<code>string output_uri_prefix = 1 [(.google.api.field_behavior) = REQUIRED];</code>

@return The bytes for outputUriPrefix.
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/GcsOutputDestination.java