text: var Author = require('../models/authorModel');
  
  // function declaration 
  exports.authorList  = authorList;
  exports.authorDetail  = authorDetail ;
  exports.authorCreateGet  = authorCreateGet ;
  exports.authorCreatePost  = authorCreatePost  ;
  exports.authorDeleteGet  = authorDeleteGet   ;
  exports.authorDeletePost  = authorDeletePost   ;
  exports.authorUpdateGet  = authorUpdateGet   ;
  exports.authorUpdatePost  = authorUpdatePost   ;
  
  
  // Display list of all Authors.
  function authorList(req, res) {
      res.send('Not Implemented: Author list');
      
  }
  
  // Display detail page for a specific Author.
  function authorDetail(req, res) {
      res.send('Not Implemented: Author list');
      
  }
  
  // Display Author create form on GET.
  function authorCreateGet(req, res) {
      res.send('Not Implemented: Author list');
      
  }
  
  // Handle Author create on POST.
  function authorCreatePost(req, res) {
      res.send('Not Implemented: Author list');
      
  }
  
  // Display Author delete form on GET.
  function authorDeleteGet(req, res) {
      res.send('Not Implemented: Author list');
      
  }
  
  // Handle Author delete on POST.
  function authorDeletePost(req, res) {
      res.send('Not Implemented: Author list');
      
  }
  
  // Display Author update form on GET.
  function authorUpdateGet(req, res) {
      res.send('Not Implemented: Author list');
      
  }
  
  // Handle Author update on POST.
  function authorUpdatePost(req, res) {
      res.send('Not Implemented: Author list');
  }