1. override
void initRenderView()

Creates a RenderView object to be the root of the RenderObject rendering tree, and initializes it so that it will be rendered when the engine is next ready to display a frame.

Called automatically when the binding is created.

Source 

@override
void initRenderView() {
  assert(renderView == null);
  renderView = new _LiveTestRenderView(configuration: createViewConfiguration());
  renderView.scheduleInitialFrame();
}