firFile.lazyResolveToPhaseRecursively(FirResolvePhase.BODY_RESOLVE)
        return firFile
    }

    private fun computeErrors(
        diagnostics: Collection<DiagnosticMarker>,
        allowedErrorFilter: (KaDiagnostic) -> Boolean,
    ): List<KaDiagnostic> {
        return buildList {
            for (diagnostic in diagnostics) {
                require(diagnostic is KtPsiDiagnostic)