docs: @Reference(name = KEY_CONFIG_ADMIN, service = ConfigurationAdmin.class)
      protected void setConfigAdmin(ServiceReference<ConfigurationAdmin> ref) {
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled())
              SibTr.entry(tc, "setConfigAdmin", ref);
          configAdminRef.setReference(ref);
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled())
              SibTr.exit(tc, "setConfigAdmin");
      }