text: const mongoose = require('mongoose');
  const autoIncrement = require('mongoose-sequence')(mongoose);
  
  /**
   * Collection Database Schema
   */
  const Collection = mongoose.Schema({
      title: {
          type: String,
          required: true
      },
      slug: {
          type: String,
          required: true
      },
      library_id: {
          type: Number,
          required: true
      },
      logo_url: {
          type: String,
          required: false
      }
  })
  
  Collection.plugin(autoIncrement, {id: 'collection', inc_field: 'id'});
  module.exports = mongoose.model("collections", Collection);