code: protected static void invalidateSwitchPoints() {
              if (LOG_ENABLED) {
                   LOG.info("invalidating switch point");
              }
          	SwitchPoint old = switchPoint;
              switchPoint = new SwitchPoint();
              synchronized(IndyInterface.class) { SwitchPoint.invalidateAll(new SwitchPoint[]{old}); }
          }
docs: Callback for constant meta class update change