*/
public JSONObject updatePicture(String fileName, InputStream inputStream) throws PlurkException {
HttpPost method = new HttpPost("http://www.plurk.com/API/Users/updatePicture");
try {
ThinMultipartEntity entity = new ThinMultipartEntity();
entity.addPart("api_key", config.getApiKey());
entity.addPart("profile_image", fileName, inputStream);
method.setEntity(entity);
return JsonUtils.toObject(executor.execute(method));
} catch (Exception e) {
throw PlurkException.create(e);
}