code: protected void bodyEntered (final int bodyOid)
      {
          log.debug("Body entered", "where", where(), "oid", bodyOid);
  
          // let our delegates know what's up
          applyToDelegates(new DelegateOp(PlaceManagerDelegate.class) {
              @Override
              public void apply (PlaceManagerDelegate delegate) {
                  delegate.bodyEntered(bodyOid);
              }
          });
  
          // if we were on the road to shutting down, step off
          cancelShutdowner();
      }
docs: Called when a body object enters this place.