* Return a sequence of [KaClassifierSymbol] which current scope contain if classifier name matches [nameFilter]. The sequence includes:
     * nested classes, inner classes, nested type aliases for the class scope, and top-level classes and top-level type aliases for file scope.
     *
     * This function needs to retrieve a set of all possible names before processing the scope.

     * Return a sequence of [KaClassifierSymbol] which current scope contain if classifier name matches [nameFilter]. The sequence includes:
     * nested classes, inner classes, nested type aliases for the class scope, and top-level classes and top-level type aliases for file scope.
     *
     * This function needs to retrieve a set of all possible names before processing the scope.

     * It should be equal to the package name specified in the [buildFileText].
     *
     * @see KaResolveExtensionFile
     */
    public abstract fun getFilePackageName(): FqName

    /**
     * Returns the set of top-level classifier (classes, interfaces, objects, and type-aliases) names in the file.
     *

        )
        val RESOLVE_EXTENSION_CLASSIFIER by stringDirective(
            "Name(s) of top-level classifier(s) in this resolve extension file",
            DirectiveApplicability.File,
        )
        val RESOLVE_EXTENSION_CALLABLE by stringDirective(
            "Names of top-level callables in this resolve extension file",
            DirectiveApplicability.File,
        )
    }

    /**
     * A list of [KaVariableSymbol]s which were created from this destructuring declaration.
     *
     * The entries are usually [KaLocalVariableSymbol]s. However, for top-level destructuring declarations in scripts, the entries are
     * [KaPropertySymbol]s instead.
     *
     * E.g., for the following code:
     * ```
     * data class X(val y: Int, val z: String)
     * fun foo() {

public interface KaSymbolContainingDeclarationProviderMixIn : KaSessionMixIn {
    /**
     * Returns containing declaration for symbol:
     *   for top-level declarations returns null
     *   for class members returns containing class
     *   for local declaration returns declaration it was declared it
     */
    public fun KaSymbol.getContainingSymbol(): KaDeclarationSymbol? =

        symbol.symbolKind == KaSymbolKind.LOCAL ->
            null
        ktClass != null ->
            // member
            ktClass.getClassId()?.asFqNameString()
        else ->
            // top-level
            ktFile.javaFileFacadeFqName.asString()
    }
    val actualClassName = symbol.getContainingJvmClassName()
    testServices.assertions.assertEquals(expectedClassName, actualClassName) {

    // todo cache?
    override fun getPossibleCallableNames(): Set<Name> = withValidityAssertion {
        imports.flatMapTo(hashSetOf()) { import: Import ->
            if (import.relativeClassName == null) { // top level callable
                DeclarationsInPackageProvider.getTopLevelCallableNamesInPackageProvider(import.packageFqName, analysisSession)
            } else { //member

    override val token: KaLifetimeToken,
) : KaSmartCastProvider(), KaFirSessionComponent {

    private val KtExpression.isExplicitSmartCastInfoTarget: Boolean
        get() {
            // we want to handle only most top-level parenthesised expressions
            if (parent is KtParenthesizedExpression) return false

            // expressions like `|foo.bar()|` or `|foo?.baz()|` are ignored

}

public typealias KtResolveExtensionInfoProvider = KaResolveExtensionInfoProvider

public interface KaResolveExtensionInfoProviderMixIn : KaSessionMixIn {
    /**
     * Returns [KaScope] which contains all top-level callable declarations which are generated by [KaResolveExtension]
     *
     * @see org.jetbrains.kotlin.analysis.api.resolve.extensions.KaResolveExtension