css
this property controls the CSS class for the top container of the toolbar. The default value is an empty string.
items
this property controls the contents of the toolbar. It defines an array of items that will be displayed. The default value is an empty array.
cssMenu
this property controls the CSS class for the top container of the popup menu. The default value is an empty string.
overflow
this property controls how the toolbar handles items that do not fit on the screen. The default value is 'wrap'.
values
this property allows user to bind values for controls inside the toolbar. The default property value is an empty object {}.