post.addParameter("user[firstname]", RandomUtil.randomName(random, b, 2, 12).toString());
b.setLength(0);
post.addParameter("user[lastname]", RandomUtil.randomName(random, b, 5, 12).toString());
post.addParameter("user[email]", username + "@" + random.makeCString(3, 10) + ".com");
b.setLength(0);
post.addParameter("user[telephone]", RandomUtil.randomPhone(random, b).toString());
post.addParameter("user[summary]", RandomUtil.randomText(random, 50, 200));
post.addParameter("user[timezone]", RandomUtil.randomTimeZone(random));
Part imagePart = new FilePart("user_image", personImg, "image/jpeg", null);
post.addPart(imagePart);