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]

def get_feed_permissions(self, feed_id, include_ids=None, exclude_inherited_permissions=None, identity_descriptor=None):
        """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]
        """
        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))