Kotlin migration

[mrtuxa]

Pull Request Etiquette

• [ ] I have checked the PRs for upcoming features/bug fixes.
• [ ] I have read the contributing guidelines.

Changes

• [ ] Internal code
• [ ] Library interface (affecting end-user code)
• [ ] Documentation
• [ ] Other: _____

Closes Issue: NaN

Description

Replace this sentence with general description of what your Pull Request does.