namespace SparkClient.Model.Extension;

public static class CommonExtension
{
    public static string ToSafeString(this object obj)
    {
        if (null == obj)
        {
            return "";
        }
        else
        {
            return obj.ToString( );
        }
    }
    public static bool IsNullOrEmpty(this string str)
    {
        return String.IsNullOrEmpty(str);
    }
}