Interface using Caché

Hello everyone,

I have a doubt, its possible to use interface like C# using COS? 

Remember, interface is different from Abstract Class, because a abstract class can implement code in the method, so I don't want this, I want only define the methods from Class, not allowing implement code.

Description of C# interface: An interface defines a contract. Any class or struct that implements that contract must provide an implementation of the members defined in the interface. Beginning with C# 8.0, an interface may define a default implementation for members.  

Link: interface - C# Reference | Microsoft Docs