final String hostname = ComponentUtil.getSystemHelper().getHostname();
        final String targetName = ComponentUtil.getFessConfig().getSchedulerTargetName();

        final String body = toJson(Map.of( //
                "type", TYPE_HEARTBEAT, //
                "instanceId", instanceId, //
                "hostname", hostname, //
                "name", StringUtil.isNotBlank(targetName) ? targetName : hostname, //

        def stringWriter = new StringWriter()
        new JsonWriter(stringWriter).withCloseable { writer ->
            writer.setIndent("    ")
            new Gson().toJson(acceptanceJson, AcceptedApiChange, writer)
        }
        return stringWriter.toString()
    }

    String getCurrentVersion() {
        return context.getUserData().get("currentVersion")
    }

    }

    /**
     * Converts a SuggestItem to a JSON string.
     *
     * @param item The SuggestItem to convert
     * @return A JSON string representation
     */
    public static String toJson(final SuggestItem item) {
        final StringBuilder buf = new StringBuilder(100);
        buf.append('{').append('"').append(FieldNames.TEXT).append("\":").append(escapeJsonString(item.getText()));

    /**
     * Converts the suggest item to a JSON string.
     * @return The JSON string representation of the suggest item.
     */
    public String toJsonString() {
        return SuggestItemSerializer.toJson(this);
    }