Cmd + click, jumping to definition in Xcode 9 issue?

If cmd+click is not working in Xcode 9, here is the solution

Xcode9-Preferences->Navigation->Command-click on Code:->Jump To Definition

if still not found

1. File > Workspace Settings
2. Click over the little grey arrow above Advanced... Button (Derived Data)
3. Select my project folder and delete it.
4. close the xcode and reopen clean and build