Storing an async function as a variable

问题

I have a question that is similar to this question but that differs in that in my case I am dealing with Asynchronous functions.

So as the question says I want to store a method in a variable (to call it later)

In the case of syncrhonous functions

private delegate void eventmethod();  //(for a function without arguments and return void)

private eventmethod MySavedEvent;

void D()
{
}

MySavedEvent = D;
MySavedEvent();

But what happens if the function is actually

Task<returnType> D();

How can I define the delegate there?

来源：https://stackoverflow.com/questions/52811268/storing-an-async-function-as-a-variable