private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vertexai.api.Schema,
            com.google.cloud.vertexai.api.Schema.Builder,
            com.google.cloud.vertexai.api.SchemaOrBuilder>
        getItemsFieldBuilder() {
      if (itemsBuilder_ == null) {
        itemsBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vertexai.api.Schema,
                com.google.cloud.vertexai.api.Schema.Builder,
                com.google.cloud.vertexai.api.SchemaOrBuilder>(
                getItems(), getParentForChildren(), isClean());
        items_ = null;
      }
      return itemsBuilder_;
    }
<pre>
Optional. SCHEMA FIELDS FOR TYPE ARRAY
Schema of the elements of Type.ARRAY.
</pre>

<code>.google.cloud.vertexai.v1.Schema items = 2 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Schema.java