how to use cookiesProvider in angular config

I want get cookie value and set to a provider. This post https://stackoverflow.com/a/20415679/772481 mentioned $cookiesProvider. But how do I use it?

mod.config(["someProvider", "$cookiesProvider", function(someProvider, $cookiesProvider) {
    someProvider.set('configs', {'token': $cookiesProvider["XSRF-TOKEN"]})
  }]);