--- a/GDBMI_list_thread_groups.st	Mon Jun 05 17:56:05 2017 +0100
+++ b/GDBMI_list_thread_groups.st	Tue Jun 06 09:37:04 2017 +0100
@@ -131,3 +131,14 @@
 	^ 'list-thread-groups'
 ! !
 
+!GDBMI_list_thread_groups methodsFor:'accessing-descriptors'!
+
+resultDescription
+    ^ (super resultDescription)
+        define:#groups as:Array of:GDBThreadGroup; 
+        define:#threads as:Array of:GDBThread; 
+        yourself
+
+    "Created: / 06-06-2017 / 00:10:29 / Jan Vrany <jan.vrany@fit.cvut.cz>"
+! !
+