Represents metadata of a class file containing a compiled Kotlin file facade.
File facade is a JVM class that contains declarations which do not belong to any Kotlin class: top-level functions, properties, and type aliases. For example, file Main.kt that contains only
fun main() would produce a
MainKt.class with FileFacade with this function metadata. If Kotlin source file contains both classes and top-level declarations, only top-level declarations would be available in the corresponding file facade. Classes would have their own JVM classfiles and their own metadata of Class kind.