Sets a custom IPanelChangeReceiver in the panelChangeReceiver setter to receive every change event. This method is available only in development builds and the editor, as it is a debug feature to go along the profiling of an application.
Note that the values returned may change over time when the underlying architecture is modified. As this is called at every change marked on any visual element of the panel, the overhead is not negligible. The callback will not be called in release builds as the method is stripped.