ImageConfiguration configuration

The settings to pass to the rowDecorations when painting, so that they can resolve images appropriately. See ImageProvider.resolve and BoxPainter.paint.

Source 

ImageConfiguration get configuration => _configuration;
void configuration=(ImageConfiguration value)

Source 

set configuration (ImageConfiguration value) {
  assert(value != null);
  if (value == _configuration)
    return;
  _configuration = value;
  markNeedsPaint();
}