private void removeRigidBody(PhysicsRigidBody node) {
   if (!physicsBodies.containsKey(node.getObjectId())) {
     logger.log(
         Level.WARNING, "RigidBody {0} does not exist in PhysicsSpace, cannot remove.", node);
     return;
   }
   if (node instanceof PhysicsVehicle) {
     logger.log(
         Level.FINE,
         "Removing vehicle constraint {0} from physics space.",
         Long.toHexString(((PhysicsVehicle) node).getVehicleId()));
     physicsVehicles.remove(((PhysicsVehicle) node).getVehicleId());
     removeVehicle(physicsSpaceId, ((PhysicsVehicle) node).getVehicleId());
   }
   logger.log(
       Level.FINE,
       "Removing RigidBody {0} from physics space.",
       Long.toHexString(node.getObjectId()));
   physicsBodies.remove(node.getObjectId());
   removeRigidBody(physicsSpaceId, node.getObjectId());
 }