devportal.routing.yml

devportal.admin_page:
  path: '/admin/devportal'
  defaults:
    _controller: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
    link_id: 'devportal.admin_page'
    _title: 'Devportal'
  requirements:
    _permission: 'administer devportal'

devportal.admin_config_page:
  path: '/admin/devportal/config'
  defaults:
    _controller: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
    link_id: 'devportal.admin_config_page'
    _title: 'Configuration'
  requirements:
    _permission: 'administer devportal'