title: How to get specific document manager in controller?
body: <p>I configured and two document managers, each document manager responsible for particular DB</p>
  <p>File location: /config/packages/doctrine_mongodb.yaml</p>
  <pre><code>doctrine_mongodb:
      auto_generate_proxy_classes: true
      auto_generate_hydrator_classes: true
      connections:
          default:
              server: '%env(resolve:MONGODB_URL)%'
              options: {}
      default_database: '%env(resolve:MONGODB_DB)%'
      document_managers:
          default:
              auto_mapping: true
              mappings:
                  App:
                      is_bundle: false
                      type: annotation
                      dir: '%kernel.project_dir%/src/Document'
                      prefix: 'App\Document'
                      alias: App
          meteo:
              database: '%env(resolve:MONGODB_DB_METEO_NAME)%'
  </code></pre>
  <p>How can I get <code>meteo</code> datamanager in controller?</p>