code: public function onGetUserNavigation($modules)
      {
          if (null === $request = $this->requestStack->getCurrentRequest()) {
              return $modules;
          }
          $this->addBackendCss();
  
          if (null !== ($user = $this->tokenStorage->getToken())) {
              $userRights = $this->extractUserRights($user);
          }
          $isAdmin = \in_array('ROLE_ADMIN', array_map(function (Role $role) {
              return $role->getRole();
          }, $user->getRoles()), true);
  
          if ($isAdmin || isset($userRights['support_metamodels'])) {
              $this->addMenu(
                  $modules,
                  'metamodels',
                  'support_screen',
                  [
                      'label' => $this->translator->trans('MOD.support_metamodels.0', [], 'contao_modules'),
                      'title' => $this->translator->trans('MOD.support_metamodels.1', [], 'contao_modules'),
                      'route' => 'metamodels.support_screen',
                      'param' => [],
                  ],
                  $request
              );
          }
  
          $locale = $request->getLocale();
          foreach ($this->viewCombination->getStandalone() as $metaModelName => $screen) {
              $moduleName = 'metamodel_' . $metaModelName;
              if (!$isAdmin && !isset($userRights[$moduleName])) {
                  continue;
              }
              $this->addMenu(
                  $modules,
                  $screen['meta']['backendsection'],
                  $moduleName,
                  [
                      'label' => $this->extractLanguageValue($screen['label'], $locale),
                      'title' => $this->extractLanguageValue($screen['description'], $locale),
                      'route' => 'contao_backend',
                      'param' => ['do' => 'metamodel_' . $metaModelName],
                  ],
                  $request
              );
          }
  
          return $modules;
      }
docs: Hook function
  
  @param array $modules The backend navigation.
  
  @return array