code: def get_feed_permissions(self, feed_id, include_ids=None, exclude_inherited_permissions=None, identity_descriptor=None):
          
          route_values = {}
          if feed_id is not None:
              route_values['feedId'] = self._serialize.url('feed_id', feed_id, 'str')
          query_parameters = {}
          if include_ids is not None:
              query_parameters['includeIds'] = self._serialize.query('include_ids', include_ids, 'bool')
          if exclude_inherited_permissions is not None:
              query_parameters['excludeInheritedPermissions'] = self._serialize.query('exclude_inherited_permissions', exclude_inherited_permissions, 'bool')
          if identity_descriptor is not None:
              query_parameters['identityDescriptor'] = self._serialize.query('identity_descriptor', identity_descriptor, 'str')
          response = self._send(http_method='GET',
                                location_id='be8c1476-86a7-44ed-b19d-aec0e9275cd8',
                                version='5.1-preview.1',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('[FeedPermission]', self._unwrap_collection(response))
docs: GetFeedPermissions.
          [Preview API] Get the permissions for a feed.
          :param str feed_id: Name or Id of the feed.
          :param bool include_ids: True to include user Ids in the response.  Default is false.
          :param bool exclude_inherited_permissions: True to only return explicitly set permissions on the feed.  Default is false.
          :param str identity_descriptor: Filter permissions to the provided identity.
          :rtype: [FeedPermission]