/// <summary>
/// 从数据库中删除给定的用户 - 队伍关系实体对象。
/// </summary>
/// <param name="entity">要删除的用户 - 队伍关系实体对象。</param>
/// <exception cref="ArgumentNullException"/>
public void RemoveUserTeamRelationEntity(UserTeamRelationEntity entity)
{
if (entity == null)
{
throw new ArgumentNullException(nameof(entity));
}
UserTeams.Remove(entity);
SaveChanges();
}
