/// <summary>
/// <see cref="IAssert{TAssert}.Current"/>由空null或一连串空格组成
/// </summary>
/// <param name="assert"></param>
/// <returns></returns>
public static IAssert <string> IsNullOrWhiteSpace(this IAssert <string> assert)
{
return(assert.IsNullOrWhiteSpace($"{assert.Name},不是空null或一连串空格组成"));
}