emqx4.3/rel/files/plugins.config

[
 {emqttd_plugin_demo, [
    {config, value}
 ]}
%%
% {emqttd_dashboard, [
%    {listener, 
%        {http, 8080, [
%            {acceptors, 4},
%            {max_clients, 512}]}}
% ]}
%%
].