val graphIndex = ControlFlowGraphIndex {
            getControlFlowGraph(anchor = statements.first(), firStatements = firStatements)
        }

        val jumpExpressions = buildList {
            fun add(expressions: List<FirElement>) {
                expressions.mapNotNullTo(this) { it.psi as? KtExpression }
            }

            add(collector.firReturnExpressions)

            collectingFailure(content ?: tree.parsingError(node, "Qualified expression without selector"))

            elementIfNoFailures {
                fun PropertyAccess.flatten(): List<String> =
                    buildList {
                        if (receiver is PropertyAccess) {
                            addAll(receiver.flatten())
                        }
                        add(name)
                    }

    overriddenDescriptor: CallableMemberDescriptor
): Boolean {
    val containingClass = (descriptor.containingDeclaration as? ClassifierDescriptorWithTypeParameters)
    val typeParametersFromOuterClass = buildList { containingClass?.let { collectTypeParameters(it) } }
    val allowedTypeParameters = (overriddenDescriptor.typeParameters + typeParametersFromOuterClass).toSet()

		if err != nil {
			// If we couldn't load the graph, we don't know what its requirements were
			// to begin with, so we can't edit those requirements in a coherent way.
			return orig, false, err
		}
		bl := mg.BuildList()[MainModules.Len():]
		selectedRoot = make(map[string]string, len(bl))
		for _, m := range bl {
			selectedRoot[m.Path] = m.Version
		}
	}

	for _, r := range tryUpgrade {