/// <summary>
 /// Remove a handler registration from a content part.
 /// </summary>
 /// <typeparam name="TContentPartHandler"></typeparam>
 public static ContentPartOptionBuilder RemoveHandler <TContentPartHandler>(this ContentPartOptionBuilder builder)
     where TContentPartHandler : class, IContentPartHandler
 {
     return(builder.RemoveHandler(typeof(TContentPartHandler)));
 }