text: 'use strict';
  /**
   * Categories Model
   * @module src/models/categories/categories-model
   */
  
  const Model = require('../memory-model.js');
  
  const schema = {
    _id: {required:true},
    name: {required:true},
  };
  
  /**
  * Extends the memory model class to create a Categories class. Exports an instance of a data model for categories.
  * @param schema {object} Schema with required document fields
  */
  class Categories extends Model {}
  
  module.exports = new Categories(schema);
  