ObjectInvokeExtensions.cs

public static class ObjectInvokeExtensions {

    public static TResult Invoke<T, TResult>(this T value, Func<T, TResult> func) {
        if (func is null) { throw new ArgumentNullException(nameof(func)); }
        return func(value);
    }

    public static void Invoke<T>(this T value, Action<T> action) {
        if (action is null) { throw new ArgumentNullException(nameof(action)); }
        action(value);
    }
}