CanvasService.setGroupVisibility Method
        
 Sets the group's visibility.
 
         
        Parameters
        
            - groupName
            
 
            - 
                
Type: String
 The name of the group. 
            - isVisible
            
 
            - 
                
Type: Boolean
 If set to true, then the group is made visible; otherwise the group is made invisible. 
            - suppressWarning
            
 
            - 
                
Type: Boolean - May be null
(Optional) True to suppress warning.