private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.visionai.v1.AnnotationCustomizedStruct,
            com.google.cloud.visionai.v1.AnnotationCustomizedStruct.Builder,
            com.google.cloud.visionai.v1.AnnotationCustomizedStructOrBuilder>
        getCustomizedStructValueFieldBuilder() {
      if (customizedStructValueBuilder_ == null) {
        if (!(valueCase_ == 6)) {
          value_ = com.google.cloud.visionai.v1.AnnotationCustomizedStruct.getDefaultInstance();
        }
        customizedStructValueBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.visionai.v1.AnnotationCustomizedStruct,
                com.google.cloud.visionai.v1.AnnotationCustomizedStruct.Builder,
                com.google.cloud.visionai.v1.AnnotationCustomizedStructOrBuilder>(
                (com.google.cloud.visionai.v1.AnnotationCustomizedStruct) value_,
                getParentForChildren(),
                isClean());
        value_ = null;
      }
      valueCase_ = 6;
      onChanged();
      return customizedStructValueBuilder_;
    }
<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