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Android Client API for Keen IO

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package io.keen.client.android;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

/**
 * JSON utilities. This code was taken from:
 * 
 * https://gist.github.com/codebutler/2339666
 *
 * @author Kevin Litwack ([email protected])
 * @since 2.0.0
 */
class JsonHelper {

    public static Object toJSON(Object object) throws JSONException {
        if (object instanceof Map) {
            JSONObject json = new JSONObject();
            Map map = (Map) object;
            for (Object key : map.keySet()) {
                json.put(key.toString(), toJSON(map.get(key)));
            }
            return json;
        } else if (object instanceof Iterable) {
            JSONArray json = new JSONArray();
            for (Object value : ((Iterable) object)) {
                json.put(value);
            }
            return json;
        } else {
            return object;
        }
    }

    public static boolean isEmptyObject(JSONObject object) {
        return object.names() == null;
    }

    public static Map getMap(JSONObject object, String key) throws JSONException {
        return toMap(object.getJSONObject(key));
    }

    public static Map toMap(JSONObject object) throws JSONException {
        Map map = new HashMap();
        Iterator keys = object.keys();
        while (keys.hasNext()) {
            String key = (String) keys.next();
            map.put(key, fromJson(object.get(key)));
        }
        return map;
    }

    public static List toList(JSONArray array) throws JSONException {
        List