return rv; }
  SetInitialChildList(nsPresContext* aPresContext,                      nsIAtom*        aListName,                      nsIFrame*       aChildList)  {    nsresult rv = nsBlockFrame::SetInitialChildList(aPresContext, aListName, aChildList);    // re-resolve our subtree to set any mathml-expected data    nsMathMLContainerFrame::MapAttributesIntoCSS(aPresContext, this);    nsMathMLContainerFrame::RebuildAutomaticDataForChildren(aPresContext, this);    return rv;  }