//API definition

/**
 * get user information
 * @param userId user ID
 * @return user information
 */
UserInfo getUserInfo(String userId);

//Example code
UserInfo userInfo = JIM.getInstance().getUserInfoManager().getUserInfo("userId");

//API definition

/**
 * get user information in batches
 * @param userIdList user ID list
 * @return user information list
 */
List<UserInfo> getUserInfoList(List<String> userIdList);

//Example code
List<String> userIdList = new ArrayList<>();
userIdList.add("userId1");
userIdList.add("userId2");
List<UserInfo> userInfoList = JIM.getInstance().getUserInfoManager().getUserInfoList(userIdList);

//API definition
/**
 * get the latest user information from the server
 * @param userId user ID
 * @param callback result callback
 */
void fetchUserInfo(String userId, JIMConst.IResultCallback<UserInfo> callback);

//Example code
JIM.getInstance().getUserInfoManager().fetchUserInfo("userId", new JIMConst.IResultCallback<UserInfo>() {
    @Override
    public void onSuccess(UserInfo userInfo) {

    }

    @Override
    public void onError(int errorCode) {

    }
});