The event * is never used

Consider the following code

namespace Marvel_EventNotUsed
{
   public interface IStatus
   {
     event EventHandler Angry;
   }

   public class Hulk : IStatus
   {
     public event EventHandler Angry;
   }
}

This will result in a warning saying

The event ‘Marvel_EventNotUsed.Hulk.Angry’ is never used

Its kind of correct in a way but the error message is confusing to fix it you need to do this.

public interface IStatus
{
    event EventHandler Angry;
}

public class Hulk : IStatus
{
   public event EventHandler Angry
   {
      add { }
      remove { }
   }
}