internal class VariableExpectedImpl(
    firDiagnostic: KtPsiDiagnostic,
    token: KtLifetimeToken,
) : KtAbstractFirDiagnostic<PsiElement>(firDiagnostic, token), KtFirDiagnostic.VariableExpected

internal class DelegationInInterfaceImpl(
    firDiagnostic: KtPsiDiagnostic,
    token: KtLifetimeToken,
) : KtAbstractFirDiagnostic<PsiElement>(firDiagnostic, token), KtFirDiagnostic.DelegationInInterface

        return KtFirResolveExtensionScope(analysisSession, tools)
    }

    @OptIn(KtModuleStructureInternals::class)
    override fun isResolveExtensionFile(file: VirtualFile): Boolean =
        file.navigationTargetsProvider != null

    @OptIn(KtModuleStructureInternals::class)
    override fun getResolveExtensionNavigationElements(originalPsi: KtElement): Collection<PsiElement> {

                && overriddenDescriptors.isNotEmpty())
    }

internal val ClassDescriptor.isInterfaceLike: Boolean
    get() = when (kind) {
        ClassKind.CLASS, ClassKind.ENUM_CLASS, ClassKind.OBJECT, ClassKind.ENUM_ENTRY -> false
        else -> true
    }

internal fun DeclarationDescriptor.toKtSymbol(analysisContext: Fe10AnalysisContext): KtSymbol? {

import org.jetbrains.kotlin.psi.psiUtil.getQualifiedExpressionForReceiver
import org.jetbrains.kotlin.utils.exceptions.errorWithAttachment
import org.jetbrains.kotlin.utils.exceptions.withPsiEntry

internal class KtFirCompletionCandidateChecker(
    override val analysisSession: KtFirAnalysisSession,
    override val token: KtLifetimeToken,
) : KtCompletionCandidateChecker(), KtFirAnalysisSessionComponent {

import org.jetbrains.kotlin.name.CallableId
import org.jetbrains.kotlin.psi.KtProperty
import org.jetbrains.kotlin.psi.psiUtil.isExtensionDeclaration
import org.jetbrains.kotlin.resolve.BindingContext

internal class KtFe10PsiDefaultPropertyGetterSymbol(
    private val propertyPsi: KtProperty,
    override val analysisContext: Fe10AnalysisContext
) : KtPropertyGetterSymbol(), KtFe10Symbol {

import org.jetbrains.kotlin.idea.references.KtFirReference
import org.jetbrains.kotlin.idea.references.getPsiDeclarations
import org.jetbrains.kotlin.kdoc.psi.impl.KDocName

internal class KtFirKDocReference(element: KDocName) : KDocReference(element), KtFirReference {
    override fun KtAnalysisSession.resolveToSymbols(): Collection<KtSymbol> {

import org.jetbrains.kotlin.analysis.api.symbols.pointers.KtSymbolPointer
import org.jetbrains.kotlin.analysis.api.types.KtType
import org.jetbrains.kotlin.descriptors.ReceiverParameterDescriptor

class KtFe10ReceiverParameterSymbol(
    override val descriptor: ReceiverParameterDescriptor,
    override val analysisContext: Fe10AnalysisContext,
) : KtReceiverParameterSymbol(), KtFe10DescSymbol<ReceiverParameterDescriptor> {

import org.jetbrains.kotlin.analysis.api.types.KtType
import org.jetbrains.kotlin.descriptors.impl.LocalVariableDescriptor
import org.jetbrains.kotlin.name.Name

internal class KtFe10DescLocalVariableSymbol(
    override val descriptor: LocalVariableDescriptor,
    override val analysisContext: Fe10AnalysisContext
) : KtLocalVariableSymbol(), KtFe10DescSymbol<LocalVariableDescriptor> {

import org.jetbrains.kotlin.descriptors.TypeParameterDescriptor
import org.jetbrains.kotlin.name.Name
import org.jetbrains.kotlin.types.Variance
import org.jetbrains.kotlin.types.typeUtil.isNullableAny

internal class KtFe10DescTypeParameterSymbol(
    override val descriptor: TypeParameterDescriptor,
    override val analysisContext: Fe10AnalysisContext
) : KtTypeParameterSymbol(), KtFe10DescSymbol<TypeParameterDescriptor> {

import org.jetbrains.kotlin.analysis.api.symbols.KtValueParameterSymbol
import org.jetbrains.kotlin.analysis.api.types.KtSubstitutor
import org.jetbrains.kotlin.analysis.api.types.KtType

internal class KtFe10FunctionLikeSignature<out S : KtFunctionLikeSymbol>(
    private val backingSymbol: S,
    private val backingReturnType: KtType,
    private val backingReceiverType: KtType?,