this.acceptedViolationsDir = acceptedViolationsDir.asFile
    }

    Map<String, String> get() {
        if (acceptedViolations == null) {
            acceptedViolations = AcceptedApiChanges.parse(
                acceptedViolationsDir.listFiles()
                    .findAll { it.name.endsWith(".json") }
                    .collect { it.text }
            ).toAcceptedChangesMap()
        }

        then:
        jsonFile.text == nonExistentAcceptedApiChanges()
    }

    static String existingAcceptedApiChanges() {
        """
            {
                "acceptedApiChanges": [
                    {
                        "type": "org.gradle.api.plugins.quality.Checkstyle",
                        "member": "Method org.gradle.api.plugins.quality.Checkstyle.getInstantiator()",

    void emptyAcceptedApiChanges(File jsonFile) {
        jsonFile.withWriter { fileWriter ->
            def writer = new JsonWriter(fileWriter)
            writer.setIndent("    ")
            new Gson().toJson([acceptedApiChanges: []], Object, writer)
            writer.close()
        }
    }

    @TaskAction
    fun execute() {
        val gson: Gson = GsonBuilder().setFormattingStyle(FormattingStyle.PRETTY.withIndent("    ")).create()
        loadChanges().mapValues {
            gson.toJson(AcceptedApiChanges(sortChanges(it.value)))
        }.forEach {
            it.key.bufferedWriter().use { out ->
                out.write(it.value)
                out.write("\n")
            }
        }
    }