override val diagnosticClass get() = InnerClassOfGenericThrowableSubclass::class
    }

    interface KclassWithNullableTypeParameterInSignature : KtFirDiagnostic<KtNamedDeclaration> {
        override val diagnosticClass get() = KclassWithNullableTypeParameterInSignature::class
        val typeParameter: KtTypeParameterSymbol
    }

    interface TypeParameterAsReified : KtFirDiagnostic<PsiElement> {

internal class KclassWithNullableTypeParameterInSignatureImpl(
    override val typeParameter: KtTypeParameterSymbol,
    firDiagnostic: KtPsiDiagnostic,
    token: KtLifetimeToken,
) : KtAbstractFirDiagnostic<KtNamedDeclaration>(firDiagnostic, token), KtFirDiagnostic.KclassWithNullableTypeParameterInSignature

internal class TypeParameterAsReifiedImpl(

            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }
    add(FirErrors.KCLASS_WITH_NULLABLE_TYPE_PARAMETER_IN_SIGNATURE) { firDiagnostic ->
        KclassWithNullableTypeParameterInSignatureImpl(
            firSymbolBuilder.classifierBuilder.buildTypeParameterSymbol(firDiagnostic.a),
            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }