private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.visionai.v1.CollectionItem,
            com.google.cloud.visionai.v1.CollectionItem.Builder,
            com.google.cloud.visionai.v1.CollectionItemOrBuilder>
        getItemFieldBuilder() {
      if (itemBuilder_ == null) {
        itemBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.visionai.v1.CollectionItem,
                com.google.cloud.visionai.v1.CollectionItem.Builder,
                com.google.cloud.visionai.v1.CollectionItemOrBuilder>(
                getItem(), getParentForChildren(), isClean());
        item_ = null;
      }
      return itemBuilder_;
    }
<pre>
The item that has already been added.
</pre>

<code>.google.cloud.visionai.v1.CollectionItem item = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AddCollectionItemResponse.java