Check if the MinimumAgeAuthorizeAttribute Could Be Simplified

[sophart]

Code from documentation here.

I'm not sure if I'm right but I just want to know if we can do this.
Instead of this:

  internal class MinimumAgeAuthorizeAttribute : AuthorizeAttribute
{
    const string POLICY_PREFIX = "MinimumAge";

    public MinimumAgeAuthorizeAttribute(int age) => Age = age;

    // Get or set the Age property by manipulating the underlying Policy property
    public int Age
    {
        get
        {
            if (int.TryParse(Policy.Substring(POLICY_PREFIX.Length), out var age))
            {
                return age;
            }
            return default(int);
        }
        set
        {
            Policy = $"{POLICY_PREFIX}{value.ToString()}";
        }
    }

Can we just do this?

    public class MinimumAgeAuthorizeAttribute : AuthorizeAttribute
    {
        const string POLICY_PREFIX = "MinimumAge";

        private readonly int _age;

        public MinimumAgeAuthorizeAttribute(int age)
        {
            _age = age;
            Policy = $"{POLICY_PREFIX}{age}";
        }

        public int Age => _age;
    }