DashboardCanvasService.getVision Method
        
 Get the current vision;
 
         
        Parameters
        
            - refresh
            
 
            - 
                
Type: Boolean - May be null
(Optional) Refresh to get the real time vision instead of the recorded vision. 
        
        Return Value
        
Type: Object{left(number), top(number), scale(number)
        
An object of vision information.