Casbin/Extensions/Model/ReadOnlyAssertionExtension.cs

using Casbin.Model;

namespace Casbin
{
    public static class ReadOnlyAssertionExtension
    {
        public static bool TryGetTokenIndex(this IReadOnlyAssertion assertion, string tokenName, out int index)
        {
            return assertion.Tokens.TryGetValue(tokenName, out index);
        }
    }
}