import Ember from "ember";
                        import Registry from "./Registry";
                        import ColumnData from "./ColumnData";
                        import EmberObjectUtils from "ember-object-utils";
                        
                        /**
                         * Class with meta data of a record type.
                         *
                         * @class EmberColumnData.ColumnDataGroup
                         */
                        export default Ember.Object.extend({
                          init : function (){
                            this._super();
                            this.set("columns", this.get("columns") || []);
                            Registry.store(this.get("name"), "columnDataGroup", this);
                          },
                        
                          /**
                           * A name to uniquely identify the column data group.
                           *
                           * @property name
                           * @type String
                           */
                          name : "",
                        
                          /**
                           * Array of columns. Each element is an object which will be passed to ColumnData.create.
                           *
                           * @property columns
                           * @type Array
                           */
                          columns : EmberObjectUtils.hasMany(ColumnData),
                        });