code: public Pager<Project> getProjects(Object groupIdOrPath, GroupProjectsFilter filter, int itemsPerPage) throws GitLabApiException {
          GitLabApiForm formData = filter.getQueryParams();
          return (new Pager<Project>(this, Project.class, itemsPerPage, formData.asMap(), "groups", getGroupIdOrPath(groupIdOrPath), "projects"));
      }
docs: Get a Pager of projects belonging to the specified group ID and filter.
  
  <pre><code>GitLab Endpoint: GET /groups/:id/projects</code></pre>
  
  @param groupIdOrPath the group ID, path of the group, or a Group instance holding the group ID or path
  @param filter the GroupProjectsFilter instance holding the filter values for the query
  @param itemsPerPage the number of Project instances that will be fetched per page
  @return a Pager containing Project instances that belong to the group and match the provided filter
  @throws GitLabApiException if any exception occurs