code: public static KFSession kfsessionGetsessionlist(String access_token, String kf_account) {
  		HttpUriRequest httpUriRequest = RequestBuilder.get()
  					.setHeader(jsonHeader)
  					.setUri(BASE_URI + "/customservice/kfsession/getsessionlist")
  					.addParameter(PARAM_ACCESS_TOKEN, API.accessToken(access_token))
  					.addParameter("kf_account", kf_account)
  					.build();
  		return LocalHttpClient.executeJsonResult(httpUriRequest, KFSession.class);
  	}
docs: 获取客服的会话列表
  @param access_token access_token
  @param kf_account 完整客服账号
  @return KFSession