(IDEA) Duplication of selected objects and variables

Object duplication function - you select the objects you need in MCreator and click the duplicate button. Since there may be difficulties with this, it can be implemented by the fact that when duplicating, you also get a window of one object. When you finish duplicating this object, you will immediately see a window for duplicating the second object. This way you don't have to click multiple times on all the objects that you need to duplicate.

It's the same with variables - for me it's even more important.