dart - How do I access metadata annotations from a class? -

I have a dart class that is annotated with metadata:

  class horrible {last string msg; Const wonderful (this.msg); String toasting () = & gt; message; } @ Avenom ('this works!') Class {}   
 I have to see if  cool  is annotated, and if so So, what will happen if I do this?  
 
 
 
 to use  dart: mirror  library metadata annotation.  
  import 'dart: mirror'; Class awesome (last string msg; const too great (this.msg); string toasting () => message;} avand ('this works!') Class cool {} void main () {classmiller class mirror = Reflector (cool); InstanceMirror & gt; Metadata = Class Mirror Metadata; Var obj = Metadata of the list; Fast. Reflexive; Print (obj); // This works!}