invalid redeclaration in auto code generate NSManagedObject Subclass Swift 3

Question

Using Version 8.1 of Xcode.

Create an entity named \"MapRegionObject\" in .xcdatamodeld file.

Using auto code generator, click Editor on the navigation bar -

Answer 1

Close the project and follow the following instructions:

1. Reveal in finder your database .xcdatamodeld file.
2. on .xcdatamodeld file right click -> Show Package Contents, if(.xcdatamodel) is find again in the package again right click and 'Show Package Contents'. you should get 'contents' file.
3. Open 'contents' in text edit.
4. Command-F (codeGenerationType="class") and replace all matchings string with blank string.

Save and open Xcode project again.Everything should work well.