code: public Pager<ProjectUser> getProjectUsers(Object projectIdOrPath, int itemsPerPage) throws GitLabApiException {
          return (getProjectUsers(projectIdOrPath, null, itemsPerPage));
      }
docs: Get a Pager of project users. This Pager includes all project members and all users assigned to project parent groups.
  
  <pre><code>GET /projects/:id/users</code></pre>
  
  @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
  @param itemsPerPage the number of Project instances that will be fetched per page
  @return a Pager of the users matching the search string and belonging to the specified project and its parent groups
  @throws GitLabApiException if any exception occurs