code: def get_variable_groups(self, project, group_name=None, action_filter=None, top=None, continuation_token=None, query_order=None):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          query_parameters = {}
          if group_name is not None:
              query_parameters['groupName'] = self._serialize.query('group_name', group_name, 'str')
          if action_filter is not None:
              query_parameters['actionFilter'] = self._serialize.query('action_filter', action_filter, 'str')
          if top is not None:
              query_parameters['$top'] = self._serialize.query('top', top, 'int')
          if continuation_token is not None:
              query_parameters['continuationToken'] = self._serialize.query('continuation_token', continuation_token, 'int')
          if query_order is not None:
              query_parameters['queryOrder'] = self._serialize.query('query_order', query_order, 'str')
          response = self._send(http_method='GET',
                                location_id='f5b09dd5-9d54-45a1-8b5a-1c8287d634cc',
                                version='5.0-preview.1',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('[VariableGroup]', self._unwrap_collection(response))
docs: GetVariableGroups.
          [Preview API] Get variable groups.
          :param str project: Project ID or project name
          :param str group_name: Name of variable group.
          :param str action_filter: Action filter for the variable group. It specifies the action which can be performed on the variable groups.
          :param int top: Number of variable groups to get.
          :param int continuation_token: Gets the variable groups after the continuation token provided.
          :param str query_order: Gets the results in the defined order. Default is 'IdDescending'.
          :rtype: [VariableGroup]