NS_NewMathMLmunderFrame(nsIFrame** aNewFrame)
NS_NewMathMLmunderFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
NS_NewMathMLmunderFrame(nsIFrame** aNewFrame){  NS_PRECONDITION(aNewFrame, "null OUT ptr");  if (nsnull == aNewFrame) {    return NS_ERROR_NULL_POINTER;  }  nsMathMLmunderFrame* it = new nsMathMLmunderFrame;  if (nsnull == it) {    return NS_ERROR_OUT_OF_MEMORY;  }  *aNewFrame = it;  return NS_OK;}