public Builder mergeManifest(com.google.cloud.storagebatchoperations.v1.Manifest value) {
        if (manifestBuilder_ == null) {
          if (objectConfigurationCase_ == 3
              && objectConfiguration_
                  != com.google.cloud.storagebatchoperations.v1.Manifest.getDefaultInstance()) {
            objectConfiguration_ =
                com.google.cloud.storagebatchoperations.v1.Manifest.newBuilder(
                        (com.google.cloud.storagebatchoperations.v1.Manifest) objectConfiguration_)
                    .mergeFrom(value)
                    .buildPartial();
          } else {
            objectConfiguration_ = value;
          }
          onChanged();
        } else {
          if (objectConfigurationCase_ == 3) {
            manifestBuilder_.mergeFrom(value);
          } else {
            manifestBuilder_.setMessage(value);
          }
        }
        objectConfigurationCase_ = 3;
        return this;
      }
<pre>
Specifies objects in a manifest file.
</pre>

<code>.google.cloud.storagebatchoperations.v1.Manifest manifest = 3;</code>
java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/BucketList.java