code: private void registerHandlers() {
          // general
          addHandler(new ReadyHandler(api));
          addHandler(new ResumedHandler(api));
  
          // server
          addHandler(new GuildBanAddHandler(api));
          addHandler(new GuildBanRemoveHandler(api));
          addHandler(new GuildCreateHandler(api));
          addHandler(new GuildDeleteHandler(api));
          addHandler(new GuildMembersChunkHandler(api));
          addHandler(new GuildMemberAddHandler(api));
          addHandler(new GuildMemberRemoveHandler(api));
          addHandler(new GuildMemberUpdateHandler(api));
          addHandler(new GuildUpdateHandler(api));
          addHandler(new VoiceStateUpdateHandler(api));
  
          // role
          addHandler(new GuildRoleCreateHandler(api));
          addHandler(new GuildRoleDeleteHandler(api));
          addHandler(new GuildRoleUpdateHandler(api));
  
          // emoji
          addHandler(new GuildEmojisUpdateHandler(api));
  
          // channel
          addHandler(new ChannelCreateHandler(api));
          addHandler(new ChannelDeleteHandler(api));
          addHandler(new ChannelPinsUpdateHandler(api));
          addHandler(new ChannelUpdateHandler(api));
          addHandler(new WebhooksUpdateHandler(api));
  
          // user
          addHandler(new PresencesReplaceHandler(api));
          addHandler(new PresenceUpdateHandler(api));
          addHandler(new TypingStartHandler(api));
          addHandler(new UserUpdateHandler(api));
  
          // message
          addHandler(new MessageCreateHandler(api));
          addHandler(new MessageDeleteBulkHandler(api));
          addHandler(new MessageDeleteHandler(api));
          addHandler(new MessageUpdateHandler(api));
  
          // reaction
          addHandler(new MessageReactionAddHandler(api));
          addHandler(new MessageReactionRemoveAllHandler(api));
          addHandler(new MessageReactionRemoveHandler(api));
      }
docs: Registers all handlers.