docs: public GameSessionPlacement withPlacedPlayerSessions(PlacedPlayerSession... placedPlayerSessions) {
          if (this.placedPlayerSessions == null) {
              setPlacedPlayerSessions(new java.util.ArrayList<PlacedPlayerSession>(placedPlayerSessions.length));
          }
          for (PlacedPlayerSession ele : placedPlayerSessions) {
              this.placedPlayerSessions.add(ele);
          }
          return this;
      }