如何在C＃中表示Golang的界面{}？

I'm trying to convert some Go code to C#. In Go there is, in example:

type MyType interface{}

objectMyType

In Go code, there is an array of these interfaces and every one of them returns a function with different arguments.

List of Funcs

I'm having problems about representing this in C#. Need some guidance to find the right path.