code: @SuppressWarnings({ "unchecked", "rawtypes" })
      public Option<Adapter<V>> get(final K key) {
          return Option.ofNullable((Adapter) registered.get(key));
      }
docs: Get the Adapter identified by the specified key
  
  <pre>
  {@code
  //close an adapter
  pipes.getValue("adapter-key")
  .map(a->a.close())
  .orElse(false); //Maybe is lazy - trigger action
  
  }
  </pre>
  
  
  @param key : Adapter identifier
  @return selected Queue