The main panel seen by the user in the system UI's 'home' state, i.e., where the user will be after pressing a home button. Will typically contain a map view, but might have different contents depending on the vehicle's configuration.
An entry point for this Panel to communicate with the rest of the system.
The source of the information contained by this panel when the information transitions from another panel to this one. By default it is null, indicating the information does not transition from any other particular panel.
Called as a result from pressing a hardware back button. This should only be called as a result of user interaction with a back button, and not to trigger behaviour that is assumed to result from a back press. For example, in order to go back in a task panel back stack, do not call this but close the panel directly using TaskPanel.dismiss instead.