Load lualdap module into openresty

Hi,

I just want to know wether or how to use lualdap in openresty. I tried to download lua-ldap module but when I required it, it displayed:

2018/02/21 09:49:41 [error] 27998#27998: *1 lua entry thread aborted: runtime error: /home/ubuntu/work/lua/test.lua:3: module 'lualdap' not found: no field package.preload['lualdap'] no file '/usr/local/openresty/site/lualib/lualdap.ljbc' no file '/usr/local/openresty/site/lualib/lualdap/init.ljbc' no file '/usr/local/openresty/lualib/lualdap.ljbc' no file '/usr/local/openresty/lualib/lualdap/init.ljbc' no file '/usr/local/openresty/site/lualib/lualdap.lua' no file '/usr/local/openresty/site/lualib/lualdap/init.lua' no file '/usr/local/openresty/lualib/lualdap.lua' no file '/usr/local/openresty/lualib/lualdap/init.lua' no file './lualdap.lua' no file '/usr/local/openresty/luajit/share/luajit-2.1.0-beta3/lualdap.lua' no file '/usr/local/share/lua/5.1/lualdap.lua' no file '/usr/local/share/lua/5.1/lualdap/init.lua' no file '/usr/local/openresty/luajit/share/lua/5.1/lualdap.lua' no file '/usr/local/openresty/luajit/share/lua/5.1/lualdap/init.lua' no file '/usr/local/openresty/site/lualib/lualdap.so' no file '/usr/local/openresty/lualib/lualdap.so' no file './lualdap.so' no file '/usr/local/lib/lua/5.1/lualdap.so' no file '/usr/local/openresty/luajit/lib/lua/5.1/lualdap.so' no file '/usr/local/lib/lua/5.1/loadall.so'

Start with the reported require('lualdap') error and review the lua-nginx-module documentation for loading external Lua modules, especially native .so modules. Determine whether lualdap is supported in OpenResty and document the required installation or configuration steps, or clearly state the limitation.