public Builder mergeListValue(com.google.cloud.visionai.v1.AnnotationList value) {
      if (listValueBuilder_ == null) {
        if (valueCase_ == 11
            && value_ != com.google.cloud.visionai.v1.AnnotationList.getDefaultInstance()) {
          value_ =
              com.google.cloud.visionai.v1.AnnotationList.newBuilder(
                      (com.google.cloud.visionai.v1.AnnotationList) value_)
                  .mergeFrom(value)
                  .buildPartial();
        } else {
          value_ = value;
        }
        onChanged();
      } else {
        if (valueCase_ == 11) {
          listValueBuilder_.mergeFrom(value);
        } else {
          listValueBuilder_.setMessage(value);
        }
      }
      valueCase_ = 11;
      return this;
    }
<pre>
Value of list type annotation.
</pre>

<code>.google.cloud.visionai.v1.AnnotationList list_value = 11;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AnnotationValue.java