collect(result, c.superclass)
        }
    }

    private List<String> filterChangesToReport(CtClass c, Map<String, CtClass> interfaces) {
        return interfaces.values().findAll { implementedDirectly(it, c) && addedInterfaceIsIncubatingOrInternal(it, c) }*.name.sort()
    }

    private boolean implementedDirectly(CtClass interf, CtClass c) {
        return c.interfaces.any { it.name == interf.name }

        collect(result, c)
        return result
    }

    private void collect(Set<CtMethod> result, CtClass c) {
        if (c == null) {
            return
        }

        result.addAll(c.declaredMethods.findAll { isPublicApi(it) })

        collect(result, c.superclass)
    }

    private boolean isPublicApi(CtMethod method) {