Laravel wrapper around OAuth 1 & OAuth 2 libraries.
refreshToken
method by @antoinelame in https://github.com/laravel/socialite/pull/675
userInstance
method. by @lucasmichot in https://github.com/laravel/socialite/pull/663
node_id
field by @lucasmichot in https://github.com/laravel/socialite/pull/657
LinkedInOpenId
provider by @nunomaduro in https://github.com/laravel/socialite/pull/662