A modern programming language that makes developers happier.

kotlinlang

and then I am getting a new kind of error:
```
org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: Error type encountered: ('[ERROR : Unresolved java classifier: Book]'..'[ERROR : Unresolved java classifier: Book]') (DelegatingFlexibleType).
Cause: Error type encountered: ('[ERROR : Unresolved java classifier: Book]'..'[ERROR : Unresolved java classifier: Book]') (DelegatingFlexibleType).
File being compiled and position: (25,72) in /Users/epool/AndroidStudioProjects/nearbooks-android/app/src/main/java/com/nearsoft/nearbooks/view/activities/BookDetailActivity.kt
PsiElement: book
The root cause was thrown at: JetTypeMapper.java:436
```