text: const mongoose = require('mongoose');
  
  const shortSchema = new mongoose.Schema({
      url: { type: String},
      id: { type: String, unique: true },
      visitCount: { type: Number, default: 0 }
  }, {
      versionKey: false
  });
  
  const ShortModel = new mongoose.model('urls', shortSchema);
  
  module.exports = ShortModel;