/// <summary> /// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed. /// <example> /// typefilter.BeginInvoke(m, filterCriteria, callback); /// </example> /// </summary> public static IAsyncResult BeginInvoke(this TypeFilter typefilter, Type m, Object filterCriteria, AsyncCallback callback) { if (typefilter == null) { throw new ArgumentNullException("typefilter"); } return(typefilter.BeginInvoke(m, filterCriteria, callback, null)); }