message: Add inbound_paths getter
diff: @@ -36,6 +36,10 @@ namespace caf {
  /// @relates stream_msg
  class stream_manager : public ref_counted {
  public:
  + // -- member types -----------------------------------------------------------
  +
  + using inbound_paths_list = std::vector<inbound_path*>;
  +
  stream_manager(local_actor* selfptr,
  stream_priority prio = stream_priority::normal);
  @@ -158,8 +162,12 @@ public:
  continuous_ = x;
  }
  - // -- inline functions -------------------------------------------------------
  + /// Returns the list of inbound paths.
  + inline const inbound_paths_list& inbound_paths() const {
  + return inbound_paths_;
  + }
  + /// Returns the parent actor.
  inline local_actor* self() {
  return self_;
  }
  @@ -197,7 +205,7 @@ protected:
  local_actor* self_;
  /// Stores non-owning pointers to all input paths.
  - std::vector<inbound_path*> inbound_paths_;
  + inbound_paths_list inbound_paths_;
  /// Keeps track of pending handshakes.
  long pending_handshakes_;
  