mxGraphModel.prototype.getValue=function(a){return null!=a?a.getValue():null};mxGraphModel.prototype.setValue=function(a,b){this.execute(new mxValueChange(this,a,b));return b};mxGraphModel.prototype.valueForCellChanged=function(a,b){return a.valueChanged(b)};mxGraphModel.prototype.getGeometry=function(a){return null!=a?a.getGeometry():null};mxGraphModel.prototype.setGeometry=function(a,b){b!=this.getGeometry(a)&&this.execute(new mxGeometryChange(this,a,b));return b};