Support this for single file facades as well as for multi-file classes,
similar to code in
MultifileClassCodegen.writeKotlinMultifileFacadeAnnotationIfNeeded.
Extend the test on this attribute to also cover multi-file classes.
- Why we bother? Because this test tries to read @Metadata via
reflection, and in 1.3 @Metadata has @Since("1.3") annotation. Thus,
with version fixed to 1.2, this test fails with UNRESOLVED_REFERENCE
- Why it is correct? Because initially this directive was used to enable
'LanguageFeature.JvmPackageName' (we didn't have infrastructure for
enabling particulare feature at that moment). So, now we could change it
to the '!LANGUAGE:+JvmPackageName', but it is actually redundant,
because master is already >= 1.2
It might differ from the JVM package FQ name if the JvmPackageName
annotation is used. This will be useful for faster indexing in the IDE
and for reflection
Mark Punzalan