Get property name in Tag Helper

ASP.NET Core introduced custom tag helpers which can be used in views like this:

<country-select value="CountryCode"  />

However, I don't understand how can I get model property name in my classes:

public class CountrySelectTagHelper : TagHelper
{
    [HtmlAttributeName("value")]
    public string Value { get; set; }

    public override void Process(TagHelperContext context, TagHelperOutput output)
    {
       ...
       // Should return property name, which is "CountryCode" in the above example
       var propertyName = ???();  
       base.Process(context, output);
    }
}

In the previous version I was able to do this by using ModelMetadata:

var metadata = ModelMetadata.FromLambdaExpression(expression, html.ViewData);
var property = metadata.PropertyName; // return "CountryCode"

How can I do the same in the new ASP.NET tag helpers?

Copyright Notice：Content Author:「Jason Smith」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/39200960/get-property-name-in-tag-helper