code: def get_server_url(self):
          
          server_host = self.driver_wrapper.config.get('Server', 'host')
          server_port = self.driver_wrapper.config.get('Server', 'port')
          server_username = self.driver_wrapper.config.get_optional('Server', 'username')
          server_password = self.driver_wrapper.config.get_optional('Server', 'password')
          server_auth = '{}:{}@'.format(server_username, server_password) if server_username and server_password else ''
          server_url = 'http://{}{}:{}'.format(server_auth, server_host, server_port)
          return server_url
docs: Return the configured server url
  
          :returns: server url