emptySequence()
    }

    override fun getPackageSymbols(nameFilter: KtScopeNameFilter): Sequence<KtPackageSymbol> = withValidityAssertion {
        sequence {
            // Only emit package symbols for top-level packages (subpackages of root). This matches the behavior
            // of the root-level KtFirPackageScope.
            val seenTopLevelPackages = mutableSetOf<Name>()

- [`KT-49175`](https://youtrack.jetbrains.com/issue/KT-49175) Inconsistency with extension super-type allowance between suspend / non-suspend function types
- [`KT-61573`](https://youtrack.jetbrains.com/issue/KT-61573) Emit the compilation warning on expect/actual classes. The warning must mention that expect/actual classes are in Beta