m>/* p */</em>);
   virtual void <strong>on_tick</strong> ();
   virtual uint64_t <strong>get_unchoke_priority</strong> (peer_connection_handle const&amp; <em>/* peer */</em>);
   virtual std::map&lt;std::string, std::string&gt; <strong>save_state</strong> () const;
   virtual void <strong>load_state</strong> (std::map&lt;std::string, std::string&gt; const&amp;);

   static constexpr feature_flags_t <strong>optimistic_unchoke_feature</strong>  = 1_bit;
   static constexpr feature_flags_t <strong>tick_featur