Menu.isAutoCollapseDisabled Property
        
 Gets or sets a value indicating whether automatic collapsing other parent's on select is disabled. By default, when another parent is selected,
 all other parents that are expanded will be collapsed.
 This option cannot be enabled if showItemsOnHover or showItemsAsPopup is set to true.
 
         
        Property Value
        
Type: Boolean
        
True if the auto collapse is disabled; false otherwise.