code: public void handleNewNodePage(ComputerSet computerSet, String name, StaplerRequest req, StaplerResponse rsp) throws IOException, ServletException {
          computerSet.checkName(name);
          req.setAttribute("descriptor", this);
          req.getView(computerSet,"_new.jelly").forward(req,rsp);
      }
docs: Handles the form submission from the "/computer/new" page, which is the first form for creating a new node.
  By default, it shows the configuration page for entering details, but subtypes can override this differently.
  
  @param name
  Name of the new node.