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