code: public Pager<Project> getUserProjects(Object userIdOrUsername, ProjectFilter filter, int itemsPerPage) throws GitLabApiException {
          GitLabApiForm formData = filter.getQueryParams();
          return (new Pager<Project>(this, Project.class, itemsPerPage, formData.asMap(),
                  "users", getUserIdOrUsername(userIdOrUsername), "projects"));
      }
docs: Get a Pager of visible projects owned by the given user.
  
  <pre><code>GET /users/:user_id/projects</code></pre>
  
  @param userIdOrUsername the user ID, username of the user, or a User instance holding the user ID or username
  @param filter the ProjectFilter instance holding the filter values for the query
  @param itemsPerPage the number of Project instances that will be fetched per page
  @return a Pager of visible projects owned by the given use
  @throws GitLabApiException if any exception occurs