UFile (package = )
    UImportStatement (isOnDemand = false)
    UImportStatement (isOnDemand = false)
    UClass (name = AnonymousKt)
        UMethod (name = foo)
            [!] UnknownKotlinExpression (BLOCK)
        UMethod (name = withErr)
            [!] UnknownKotlinExpression (BLOCK)
