1. When an annotation has multiple targets, the priority goes like this:
constructor parameter (if applicable) -> property -> backing field.
2. The argument to `kotlin.annotation.Target` is a vararg, so that
should be handled as well.
3. `AnnotationTarget.VALUE_PARAMETER` allows receivers, constructor
parameters, and setter parameters, while `AnnotationTarget.FIELD` allows
both backing fields and delegates.
Known issue: java.lang.annotation.Target is not remapped to the Kotlin
equivalent, so things are still broken for pure Java annotations.
pyos