return when (this) {
            KtTypeMappingMode.DEFAULT -> TypeMappingMode.DEFAULT
            KtTypeMappingMode.DEFAULT_UAST -> TypeMappingMode.DEFAULT_UAST
            KtTypeMappingMode.GENERIC_ARGUMENT -> TypeMappingMode.GENERIC_ARGUMENT
            KtTypeMappingMode.SUPER_TYPE -> TypeMappingMode.SUPER_TYPE
            KtTypeMappingMode.SUPER_TYPE_KOTLIN_COLLECTIONS_AS_IS -> TypeMappingMode.SUPER_TYPE_KOTLIN_COLLECTIONS_AS_IS

        return when (this) {
            KtTypeMappingMode.DEFAULT -> TypeMappingMode.DEFAULT
            KtTypeMappingMode.DEFAULT_UAST -> TypeMappingMode.DEFAULT_UAST
            KtTypeMappingMode.GENERIC_ARGUMENT -> TypeMappingMode.GENERIC_ARGUMENT
            KtTypeMappingMode.SUPER_TYPE -> TypeMappingMode.SUPER_TYPE
            KtTypeMappingMode.SUPER_TYPE_KOTLIN_COLLECTIONS_AS_IS -> TypeMappingMode.SUPER_TYPE_KOTLIN_COLLECTIONS_AS_IS

    if (descriptor is TypeAliasDescriptor) {
        descriptor = descriptor.classDescriptor
    }

    if (descriptor !is ClassDescriptor) {
        return null
    }

    // Generic non-array class literals are not supported in K1
    val typeArguments = descriptor.typeConstructor.parameters.map { StarProjectionImpl(it) }

     * (see [KtFakeSourceElementKind.ArrayTypeFromVarargParameter]).
     * - if FIR reference points to the type with generic parameters (like `Foo<Bar>`), its source is not [KtTypeReference], but
     * [KtNameReferenceExpression].
     */
    private val FirResolvedTypeRef.correspondingTypePsi: KtUserType?
        get() {

        function: FirSimpleFunction,
        other: FirLiteralExpression<*>
    ): FirLiteralExpression<*>? {
        if (value == null || other.value == null) return null
        // NB: some utils accept very general types, and due to the way operation map works, we should up-cast rhs type.
        val rightType = when {
            function.symbol.callableId.isStringEquals -> CompileTimeType.ANY

      @TestDataPath("$PROJECT_ROOT")
      public class Generics {
        @Test
        public void testAllFilesPresentInGenerics() {
          KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("analysis/analysis-api/testData/referenceResolve/kDoc/extensions/generics"), Pattern.compile("^([^.]+)\\.kt$"), null, true);
        }

- [`KT-58618`](https://youtrack.jetbrains.com/issue/KT-58618) K2: Local property delegates cannot infer generic return type
- [`KT-36770`](https://youtrack.jetbrains.com/issue/KT-36770) Prohibit unsafe calls with expected `@NotNull` T and given Kotlin generic parameter with nullable bound
- [`KT-56739`](https://youtrack.jetbrains.com/issue/KT-56739) K2: build Space iOS

            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }
    add(FirErrors.GENERIC_THROWABLE_SUBCLASS) { firDiagnostic ->
        GenericThrowableSubclassImpl(
            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }
    add(FirErrors.INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS) { firDiagnostic ->
        InnerClassOfGenericThrowableSubclassImpl(

 * provides symbol names from binary libraries in Standalone mode, which the Standalone declaration provider does not contain (to avoid
 * stub-indexing binary libraries). And in general, querying the symbol names provider might be faster since its sets are cached, which is
 * not necessarily the case for declaration providers (e.g. the IDE declaration provider hitting the index without caching).
 *

        qualifier: KtSimpleNameExpression,
        wholeTypeFir: FirResolvedTypeRef
    ): ClassId? {
        val qualifierToResolve = qualifier.parent as KtUserType
        // FIXME make it work with generics in functional types (like () -> AA.BB<CC, AA.DD>)
        val wholeType = when (val psi = wholeTypeFir.psi) {
            is KtUserType -> psi
            is KtTypeReference -> psi.typeElement?.unwrapNullability() as? KtUserType