def command_callback(id, buffer, args)
      Weechat::Command.find_by_id(id).call(Weechat::Buffer.from_ptr(buffer), args)
    end
def command_callback(id, buffer, args)
      Weechat::Command.find_by_id(id).call(Weechat::Buffer.from_ptr(buffer), args)
    end
low level Callback method used for commands