private void configureFXGL(){
  log.debug("Configuring FXGL");
  long start=System.nanoTime();
  initSystemProperties();
  initUserProperties();
  initAppSettings();
  FXGL.configure(new ApplicationModule((GameApplication)this));
  log.debug("FXGL configuration complete");
  log.infof("FXGL configuration took:  %.3f sec",(System.nanoTime() - start) / 1000000000.0);
}

private void configureFXGL ( ) { log . debug ( "Configuring FXGL" ) ; long start = System . nanoTime ( ) ; initSystemProperties ( ) ; initUserProperties ( ) ; initAppSettings ( ) ; FXGL . configure ( new ApplicationModule ( ( GameApplication ) this ) ) ; log . debug ( "FXGL configuration complete" ) ; log . infof ( "FXGL configuration took:  %.3f sec" , ( System . nanoTime ( ) - start ) / 1000000000.0 ) ; }
configures fxgl . after this call all fxgl . * calls are valid .
