code: function(code) {
                  console.log('oauthInterface.token.get');
                  this.params.data.code = code;
  
                  return this.request({
                      url: this._buildUri(this.uri),
                      method: corbel.request.method.POST,
                      contentType: 'application/x-www-form-urlencoded; charset=UTF-8',
                      data: this.params.data
                  });
              }
docs: Get an access token
  @method
  @memberOf corbel.Oauth.TokenBuilder
  
  @param  {String} code The code to exchange for the token
  
  @return {Promise}     promise that resolves to an access token  {Object}  or rejects with a {@link CorbelError}