public IHttpActionResult AddGroupMember(Guid groupId, NewGroupMember newGroupMember)
{
if (groupId == Guid.Empty)
{
throw new ArgumentException("groupId must be defined.");
}
if (newGroupMember == null)
{
throw new ArgumentNullException("newGroupMember");
}
if (newGroupMember.UserId == Guid.Empty)
{
throw new ArgumentException("User id must be defined.");
}
var groupMember = identityManagementService.AddGroupMember(groupId, newGroupMember.UserId);
UserListItem userListItem = mapperFactory.CreateUserListItemMapper().Map(groupMember);
return Ok(userListItem);
}
