To use the LinkedIn API, you need to provide the Access Token when creating the LinkedInHelper object.

1. Create an App on LinkedIn https://www.linkedin.com/developers/apps
2. Once created, go to the Auth tab
3. Click OAuth 2.0 tools
4. Click Create Token
5. Select Member Authorization + r_liteprofile + w_member_social
6. Click the Request Access Token button

The created access token will be used to create an instance of the LinkedInHelper object

 using CodeHelper.API.LinkedIn;
 LinkedInHelper _helper = new() {AuthorID= "{AuthorID}", AccessToken ="{AccessToken}" };