private ContextCopyingRunable(IEnumerable <string> names)
 {
     if (names == null)
     {
         throw new ArgumentNullException("names");
     }
     _contextCarrier = new ContextCarrier(names);
 }
 private ContextCopyingRunable(IEnumerable<string> names)
 {
     if (names == null) throw new ArgumentNullException("names");
     _contextCarrier = new ContextCarrier(names);
 }