code: public ItemRequest<Project> addMembers(String project) {
      
          String path = String.format("/projects/%s/addMembers", project);
          return new ItemRequest<Project>(this, Project.class, path, "POST");
      }
docs: Adds the specified list of users as members of the project. Returns the updated project record.
  
  @param  project The project to add members to.
  @return Request object