/**
 * How a symbol is imported. The order of the enum entry represents the priority of imports. If a symbol is available from multiple kinds of
 * imports, the symbol from "smaller" kind is used. For example, an explicitly imported symbol can overwrite a star-imported symbol.
 */
private enum class ImportKind {
    /** The symbol is available from the local scope and hence cannot be imported or overwritten. */
    LOCAL,

        return buildSet {
            addAll(getCallableSymbols(shortName))
            addAll(getClassifierSymbols(shortName))
        }
    }

    /**
     * Tries to resolve [fqName] into available extension callables (functions or properties)
     * prefixed with a suitable extension receiver type (like in `Foo.bar`, or `foo.Foo.bar`).
     *

        //  candidate, `Candidate.substitutor` is not complete. maybe we can carry over the final substitutor if it's available from
        //  body resolve phase?
        val substitutor = when (fir) {
            is FirQualifiedAccessExpression -> fir.createSubstitutorFromTypeArguments(targetSymbol)

            firSymbolBuilder.buildSymbol(firDiagnostic.b),
            firDiagnostic.c,
            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }
    add(FirErrors.API_NOT_AVAILABLE) { firDiagnostic ->
        ApiNotAvailableImpl(
            firDiagnostic.a,
            firDiagnostic.b,
            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }