text: "use strict";
  
  module.exports = {
    up: function(migration, DataTypes, done) {
      migration.removeColumn('Pages', 'identifier');
      migration.removeColumn('NavigationItems', 'identifier');
      done();
    },
  
    down: function(migration, DataTypes, done) {
      migration.addColumn('Pages', 'identifier', DataTypes.string);
      migration.addColumn('NavigationItems', 'identifier', DataTypes.string);
      done();
    }
  };
  