class Quickbooks::Service::AccessToken

def renew

https://developer.intuit.com/docs/0025_quickbooksapi/0053_auth_auth/oauth_management_api#Reconnect 
def renew
  result = nil
  response = do_http_get(RENEW_URL)
  if response
    code = response.code.to_i
    if code == 200
      result = Quickbooks::Model::AccessTokenResponse.from_xml(response.plain_body)
    end
  end
  result
end