Add 2-2 seq dgrm with just actor

models/141221.diagram

@@ -0,0 +1,6 @@
+format 223
+
+classinstancecanvas 128037 classinstance_ref 141605 // 
+  xyz 28 4 2005 life_line_z 2000
+end
+end

models/models.prj

@@ -1544,5 +1544,18 @@ format 223
       relations
         end
     end
+
+    sequencediagram 141221 "2-2-cofnijOstatniaModyfikacjeStatusZamowienia"
+      sequencediagramsettings end
+      overlapping_bars size A4
+    end
+
+    classinstance 141605 ""
+      type class_ref 135288 // Kucharz
+      attributes
+        end
+      relations
+        end
+    end
   end
 end