C# Online Compiler | .NET Fiddle

using System;
using System.Collections.Generic;

public class FrameEvent {
	public FrameEvent(string message, Dictionary<string,object> parameters) {
		this._message = message;
		this._parameters = parameters;
	}
	public string _message;
	public Dictionary<string,Object> _parameters;
	public Object _return;
}

public delegate void FrameState(FrameEvent e);

// emitted from framec_v0.3.43
public partial class InterfaceSpec {
    public InterfaceSpec() {
        
        _state_ = _sEcho_;
    }
    
    //===================== Interface Block ===================//
    
    public string yell(string msg) {
        Dictionary<String,object> parameters = new Dictionary<String,object>();
        parameters["msg"] = msg;

        FrameEvent e = new FrameEvent("whisper",parameters);
        _state_(e);
        return (string) e._return;
    }
    
    
    //===================== Machine Block ===================//
    
    private void _sEcho_(FrameEvent e) {
        if (e._message.Equals("whisper")) {
            e._return = toLowerCase_do(((string) e._parameters["msg"]));
            return;
            
        }
    }
    
    //===================== Actions Block ===================//
    
    protected virtual string toLowerCase_do(string msg) { throw new NotImplementedException(); }
    
    
    //=============== Machinery and Mechanisms ==============//
    
    private delegate void FrameState(FrameEvent e);
    private FrameState _state_;
    
}


public partial class InterfaceSpecController : InterfaceSpec {

    protected override string toLowerCase_do(string msg) {
		return msg.ToLower();
	}
}

public class Program
{
	public static void Main()
	{
		var interfaceSpecController = new InterfaceSpecController();
		Console.WriteLine(interfaceSpecController.yell("HI"));
	}
}

 
using System;
using System.Collections.Generic;
​
public class FrameEvent {
    public FrameEvent(string message, Dictionary<string,object> parameters) {
        this._message = message;
        this._parameters = parameters;
    }
    public string _message;
    public Dictionary<string,Object> _parameters;
    public Object _return;
}
​
public delegate void FrameState(FrameEvent e);
​
// emitted from framec_v0.3.43
public partial class InterfaceSpec {
    public InterfaceSpec() {
        
        _state_ = _sEcho_;
    }
    
    //===================== Interface Block ===================//
    

Cached Result