data: Unit
    ): KtContractConditionalContractEffectDeclaration = KtContractConditionalContractEffectDeclaration(
        conditionalEffect.effect.accept(),
        conditionalEffect.condition.accept()
    )

    override fun visitReturnsEffectDeclaration(
        returnsEffect: ConeReturnsEffectDeclaration,
        data: Unit
    ): KtContractReturnsContractEffectDeclaration =

        conditionalEffect: ConditionalEffectDeclaration,
        data: Unit
    ): Any = KtContractConditionalContractEffectDeclaration(
        conditionalEffect.effect.accept(),
        conditionalEffect.condition.accept(),
    )

    override fun visitReturnsEffectDeclaration(
        returnsEffect: ReturnsEffectDeclaration,
        data: Unit
    ): KtContractReturnsContractEffectDeclaration =

    } ?: FirSyntheticFunctionInterfaceSourceProvider.findPsi(fir)
}

/**
 * Finds [PsiElement] which will be used as go-to referenced element for [KtPsiReference]
 * For data classes & enums generated members like `copy` `componentN`, `values` it will return corresponding enum/data class
 * Otherwise, behaves the same way as [findPsi] returns exact PSI declaration corresponding to passed [FirDeclaration]
 */

                )
            }
        }
    }
}

private sealed class FqNameInterpretation {

    data class FqNameInterpretationAsPackage(val packageFqName: FqName) : FqNameInterpretation()
    data class FqNameInterpretationAsClassId(val classId: ClassId) : FqNameInterpretation()
    data class FqNameInterpretationAsCallableId(val callableId: CallableId) : FqNameInterpretation()

    companion object {

            }
        }

        return null
    }
}

private fun FqName.dropFakeRootPrefixIfPresent(): FqName =
    tail(FqName(ROOT_PREFIX_FOR_IDE_RESOLUTION_MODE))

private data class AdditionalImports(val simpleImports: Set<FqName>, val starImports: Set<FqName>)

private inline fun <reified T : KtElement> KtFile.findSmallestElementOfTypeContainingSelection(selection: TextRange): T? =

        return TypeArgumentMapping(typeParameterOwner, mapping)
    }

    private data class TypeArgumentMapping(
        val owner: ClassifierDescriptorWithTypeParameters,
        val mapping: Map<TypeParameterDescriptor, BoundTypeArgument>
    )

    private data class BoundTypeArgument(val type: KotlinType, val variance: Variance)

For handy work with compiler tests it's recommended to use [
Kotlin Compiler Test Helper](https://github.com/demiurg906/test-data-helper-plugin)

### Dependency verification

We have a [dependencies verification](https://docs.gradle.org/current/userguide/dependency_verification.html) feature enabled in the

import kotlin.reflect.KType

data class HLDiagnostic(
    val original: DiagnosticData,
    val severity: Severity?,
    val className: String,
    val implClassName: String,
    val parameters: List<HLDiagnosticParameter>,
)

data class HLDiagnosticList(val diagnostics: List<HLDiagnostic>)

data class HLDiagnosticParameter(
    val original: DiagnosticParameter,

            token,
        )
    }
    add(FirErrors.DATA_CLASS_CONSISTENT_COPY_AND_EXPOSED_COPY_ARE_INCOMPATIBLE_ANNOTATIONS) { firDiagnostic ->
        DataClassConsistentCopyAndExposedCopyAreIncompatibleAnnotationsImpl(
            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }
    add(FirErrors.DATA_CLASS_CONSISTENT_COPY_WRONG_ANNOTATION_TARGET) { firDiagnostic ->

- [`KT-61304`](https://youtrack.jetbrains.com/issue/KT-61304) Reflection: Calling data class `copy` method via reflection (callBy) fails when the data class has exactly 64 fields
- [`KT-52071`](https://youtrack.jetbrains.com/issue/KT-52071) Continue gracefully when the system property check "kotlin.ignore.old.metadata" fails

### Tools. CLI