Unselect Window on Mission Control with Swift

Question

This is an Example of Selected Mission Control Window. Safari is Selected

And this is an example of no windows selected on mission control

How it's possible unselect this window?

Using Swift/Obj-C/Applescript or whatever. But without changing the mouse location

My progress is this, I reached to the attribute AXSelectedChildren of Mission Control windows. Code Below

for entry in  (CGWindowListCopyWindowInfo(CGWindowListOption.optionOnScreenOnly, kCGNullWindowID) as NSArray? as? [[String: AnyObject]])!
    {
        if entry[kCGWindowOwnerName as String] as! String == "Dock"
        {
            let bounds: NSDictionary = entry[kCGWindowBounds as String] as! NSDictionary

            if (bounds["Y"] as! NSNumber) != 0{ //if Mission Control is Launched

                let dockAppElement = AXUIElementCreateApplication((entry[kCGWindowOwnerPID as String] as? Int32)!)

                var dockAttributeValues: AnyObject?

                _ = AXUIElementCopyAttributeValue(dockAppElement, kAXChildrenAttribute as CFString, &dockAttributeValues)

                var childrenRef = (dockAttributeValues as! [AXUIElement]).last // group 1 of Dock
                _ = AXUIElementCopyAttributeValue(childrenRef!, kAXChildrenAttribute as CFString, &dockAttributeValues)

                childrenRef = (dockAttributeValues as! [AXUIElement]).first // group 1 of group 1 of Dock
                _ = AXUIElementCopyAttributeValue(childrenRef!, kAXChildrenAttribute as CFString, &dockAttributeValues)

                childrenRef = (dockAttributeValues as! [AXUIElement]).first // group 1 of group 1 of group 1 of Dock
                _ = AXUIElementCopyAttributeValue(childrenRef!, kAXSelectedChildrenAttribute as CFString, &dockAttributeValues)
                        
                if let selectedWindow = (dockAttributeValues as! [AXUIElement]).first{ // selected Children of group 1 of group 1 of group 1 of Dock
                    _ = AXUIElementCopyAttributeValue(selectedWindow, kAXTitleAttribute as CFString, &dockAttributeValues)
                    if let titleWindow = (dockAttributeValues as? String){print(titleWindow)}

                }
                else{ // if selectedChildren == nil
                    print("no windows selected")
                }
                break
             }
         }
     }