Do not include oli.* symbols in the inheritance chain

apidoc/plugins/api.js

@@ -65,8 +65,10 @@ function includeAugments(doclet) {
             }
           });
         }
-        cls._hideConstructor = true;
-        delete cls.undocumented;
+        if (cls.longname.indexOf('oli.') !== 0) {
+          cls._hideConstructor = true;
+          delete cls.undocumented;
+        }
       }
     }
   }