/// <summary>
/// 检查用户角色信息信息是否存在
/// </summary>
/// <param name="predicate">检查谓语表达式</param>
/// <param name="id">更新的用户角色信息编号</param>
/// <returns>用户角色信息是否存在</returns>
public Task <bool> CheckUserRoleExists(Expression <Func <UserRole, bool> > predicate, Guid id = default(Guid))
{
return(UserRoleRepository.CheckExistsAsync(predicate, id));
}