code: def view_servers(self):
          
          endpoint = "https://api.newrelic.com"
          uri = "{endpoint}/api/v1/accounts/{id}/servers.xml".format(endpoint=endpoint, id=self.account_id)
          response = self._make_get_request(uri)
          servers = []
  
          for server in response.findall('.//server'):
              server_properties = {}
              for field in server:
                  server_properties[field.tag] = field.text
              servers.append(Server(server_properties))
          return servers
docs: Requires: account ID (taken from Client object)
          Returns: a list of Server objects
          Endpoint: api.newrelic.com
          Errors: 403 Invalid API Key
          Method: Get