instrumentedClassesFileChange.writeChange(instrumentedClassesFile)
        upgradedPropertiesFileChange.writeChange(upgradedPropertiesFile)
    }

    private
    fun findChanges(oldSuperTypes: Properties): Triple<Properties, MetadataFileChange, MetadataFileChange> {
        val superTypes = Properties().apply { putAll(oldSuperTypes) }
        var instrumentedClassesFile: MetadataFileChange = MetadataNotChanged

                    file("build/classes/java/main/org/gradle/internal/instrumentation").mkdirs()
                    def instrumentedClassesFile = file("build/classes/java/main/org/gradle/internal/instrumentation/instrumented-classes.txt")
                    if (!instrumentedClassesFile.exists()) {
                        instrumentedClassesFile << "org/gradle/api/Task\norg/gradle/api/DefaultTask"
                    }