updated API docs

docs/backend_api/entities_attribute.js.html

@@ -133,6 +133,11 @@ class Attribute extends Entity {
             this.dateModified = dateUtils.nowDate();
         }
     }
+
+    // cannot be static!
+    updatePojo(pojo) {
+        delete pojo.isOwned;
+    }
 }
 
 module.exports = Attribute;</code></pre>