showToolbar property
      
      bool
      get
      showToolbar
      
    
    
Shows zooming toolbar in the web platform.
Defaults to true in web platform.
However, you can use this property to change its visibility.
Implementation
bool get showToolbar => _showToolbar;
      
      set
      showToolbar
      (bool value) 
      
    
    
    
Implementation
set showToolbar(bool value) {
  if (_showToolbar == value) {
    return;
  }
  _showToolbar = value;
}