public Builder mergeCustomizedStructValue(
        com.google.cloud.visionai.v1.AnnotationCustomizedStruct value) {
      if (customizedStructValueBuilder_ == null) {
        if (valueCase_ == 6
            && value_
                != com.google.cloud.visionai.v1.AnnotationCustomizedStruct.getDefaultInstance()) {
          value_ =
              com.google.cloud.visionai.v1.AnnotationCustomizedStruct.newBuilder(
                      (com.google.cloud.visionai.v1.AnnotationCustomizedStruct) value_)
                  .mergeFrom(value)
                  .buildPartial();
        } else {
          value_ = value;
        }
        onChanged();
      } else {
        if (valueCase_ == 6) {
          customizedStructValueBuilder_.mergeFrom(value);
        } else {
          customizedStructValueBuilder_.setMessage(value);
        }
      }
      valueCase_ = 6;
      return this;
    }
<pre>
Value of custom struct type annotation.
</pre>

<code>.google.cloud.visionai.v1.AnnotationCustomizedStruct customized_struct_value = 6;
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AnnotationValue.java