code: function _initSequelize() {
    if (process.env.DATABASE_URL) {
      const dbURL = process.env.DATABASE_URL;
      const dialect = dbURL.split(':')[0];
      const config = Utils.merge(this.config, { dialect });
  
      return new Sequelize(dbURL, config);
    }
  
    return new Sequelize(this.config);
  }
docs: @private
  
  Initializes Sequelize ORM
  
  @return {Sequelize}