linux-packaging-mono/mcs/errors/cs0071-2.cs

// CS0071: `ErrorCS0071.IFoo.OnFoo': An explicit interface implementation of an event must use property syntax
// Line: 13

using System;

public delegate void Foo (object source);

interface IFoo {
	event Foo OnFoo;
}

class ErrorCS0071 : IFoo {
	public event Foo IFoo.OnFoo;
}