message: API docs. Better docs for virtual_::Interface.
diff: @@ -46,6 +46,9 @@ private:
  static void unregisterInterface(const oatpp::String& name);
  public:
  + /**
  + * `ListenerLock` is the Lock object, which represents interface binding ownership.
  + */
  class ListenerLock {
  friend Interface;
  private:
  @@ -138,8 +141,8 @@ public:
  static std::shared_ptr<Interface> obtainShared(const oatpp::String& name);
  /**
  - *
  - * @return
  + * Aquire &l:Interface::ListenerLock ;.
  + * @return - `std::shared_ptr` to &l:Interface::ListenerLock ;.
  */
  std::shared_ptr<ListenerLock> bind();
  