A modern programming language that makes developers happier.

kotlinlang

Mmmh… what does `unresolved java qualifier` mean?
```
Error:(55, 30) Kotlin: Overload resolution ambiguity: 
public open fun create(contentType: com.squareup.okhttp.MediaType!, content: [ERROR : Unresolved java classifier: ByteString]!): com.squareup.okhttp.RequestBody! defined in com.squareup.okhttp.RequestBody
public open fun create(contentType: com.squareup.okhttp.MediaType!, file: java.io.File!): com.squareup.okhttp.RequestBody! defined in com.squareup.okhttp.RequestBody
```