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