forwardParentProp: function(prop, value) {
if (this.rows) {
this.rows.forEach(function(row) {
row[prop] = value;
}, this);
}
},
_forwardParentPath: function(path, value) {
if (this.rows) {
this.rows.forEach(function(row) {
row.notifyPath(path, value, true);
}, this);
}
},
_forwardItemPath: function(path, value) {
if (this._rowForKey) {
var dot = path.indexOf(".");
var key = path.substring(0, dot < 0 ? path.length : dot);
var idx = this._rowForKey[key];
var row = this.rows[idx];
if (row) {
if (dot >= 0) {
pa