Simple Closure Implementation for Unity C#

Closure.cs

using System;

public struct Closure<TContext> {
    Delegate del;
    TContext context;

    public Closure(Delegate del, TContext context = default) {
        this.del = del;
        this.context = context;
    }

    public void Invoke() {
        if (del is Action action) {
            action();
        } else if (del is Action<TContext> actionWithContext) {
            actionWithContext(context);
        } else {
            throw new InvalidOperationException("Unsupported delegate type for Invoke.");
        }
    }

    public TResult Invoke<TResult>() {
        if (del is Func<TResult> func) {
            return func();
        } else if (del is Func<TContext, TResult> funcWithContext) {
            return funcWithContext(context);
        } else {
            throw new InvalidOperationException("Unsupported delegate type for Invoke<TResult>.");
        }
    }

    public static Closure<TContext> Create(Action action) => new Closure<TContext>(action);
    public static Closure<TContext> Create(Action<TContext> action, TContext context) => new Closure<TContext>(action, context);
    public static Closure<TContext> Create<TResult>(Func<TResult> func) => new Closure<TContext>(func);
    public static Closure<TContext> Create<TResult>(Func<TContext, TResult> func, TContext context) => new Closure<TContext>(func, context);
}