code: @Override
      public void stop(BundleContext bc) throws Exception {
          RuntimeDelegate.setInstance(null);
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
              Tr.debug(tc, "stop", bc);
          }
      }
docs: /* (non-Javadoc)
  @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)