code: public AuthorizationCodeUriRequest.Builder authorizationCodeUri() {
      return new AuthorizationCodeUriRequest.Builder()
              .setDefaults(httpManager, scheme, host, port)
              .client_id(clientId)
              .response_type("code")
              .redirect_uri(redirectUri);
    }
docs: Retrieve an URL where the user can give the application permissions.
  
  @return An {@link AuthorizationCodeUriRequest.Builder}.