Offset paintOffset

The offset at which to paint the child.

The offset can be non-zero only in the mainAxis.

Source 

Offset get paintOffset => _paintOffset;
void paintOffset=(Offset value)

Source 

set paintOffset(Offset value) {
  assert(value != null);
  if (value == _paintOffset)
    return;
  assert(_offsetIsSane(value, mainAxis));
  _paintOffset = value;
  markNeedsPaint();
  markNeedsSemanticsUpdate();
}