ttps://developers.google.com/protocol-buffers/docs/reference/google.protobuf#struct>google.protobuf.Struct</a></code></td><td><p>Required. Depends on referenced template. Struct representation of a
proto defined by the template; this varies depending on the value of field <code>template</code>.</p></td></tr><tr id=Instance-attribute_bindings><td><code>attributeBindings</code></td><td><code>map&lt;string,&nbsp;string&gt;</code></td><td><p>Optional. Defines attribute bindings to map the output of attribute-pr