onCreate

The callback that is invoked when the editor is created. This is the main initialization block of both the editor and engine. Normally, you should create/load a scene, prepare asset sources and apply editor settings in this block. We recommend that you check the availability of the scene before creating/loading a new scene since a recreated scene may already exist if the callback is invoked after a process recreation. In addition to scene creation, it is highly recommended to register all the asset sources in this callback. Note that the "create" coroutine job will survive configuration changes and will be cancelled only if the editor is closed or the process is killed when in the background.