private static void RegisterChatCommands(ICoreClientAPI api)
        {
            api.RegisterClientChatCommand <Wp>();
            api.RegisterClientChatCommand <Wpex>();
            api.RegisterClientChatCommand <Wpt>();
            api.RegisterClientChatCommand <Wptl>();
            api.RegisterClientChatCommand <Wptp>();

            // Will eventually be shipped to Campaign Cartographer Mod.
            api.RegisterClientChatCommand <Cm>();
            api.RegisterClientChatCommand <Gps>();
        }