public Builder setBucketList(
        com.google.cloud.storagebatchoperations.v1.BucketList.Builder builderForValue) {
      if (bucketListBuilder_ == null) {
        source_ = builderForValue.build();
        onChanged();
      } else {
        bucketListBuilder_.setMessage(builderForValue.build());
      }
      sourceCase_ = 19;
      return this;
    }
<pre>
Specifies a list of buckets and their objects to be transformed.
</pre>

<code>.google.cloud.storagebatchoperations.v1.BucketList bucket_list = 19;</code>
java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/Job.java