MultiSelectionViewModel.setPosition Method
        
 Sets the group's switch position.
 
         
        Parameters
        
            - backgroundCoord
            
 
            - 
                
Type: Coordinates
The background coordinates to set. 
            - isNotUndoable
            
 
            - 
                
Type: Boolean
(Optional) True to make this action not undoable.  
            - transaction
            
 
            - 
                
Type: Transaction - May be null
(Optional) The transaction to use.