service router.matcher

RegisterRouteFiltersPass::process in drupal/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterRouteFiltersPass.php

Adds services tagged 'nested_matcher' to the tagged_matcher service.

class: Symfony\Cmf\Component\Routing\NestedMatcher\NestedMatcher
arguments:
  - '@router.route_provider'
calls:
  - [setFinalMatcher, ['@router.matcher.final_matcher']]