@NotNull
    @ObjectiveCName("transferOwnershipWithGid:withUid:")
    public Promise<Void> transferOwnership(int gid, int uid) {
        return modules.getGroupsModule().transferOwnership(gid, uid);
    }
@ NotNull @ ObjectiveCName ( "transferOwnershipWithGid:withUid:" ) public Promise < Void > transferOwnership ( int gid , int uid ) { return modules . getGroupsModule ( ) . transferOwnership ( gid , uid ) ; }
Transfer ownership of group

@param gid group's id
@param uid user's id
@return Promise of void