nsChildContentList::GetLength(PRUint32* aLength)
DOMAttributeMap::GetLength(PRUint32 *aLength)
nsChildContentList::GetLength(PRUint32* aLength){  if (nsnull != mContent) {    PRInt32 length;    mContent->ChildCount(length);    *aLength = (PRUint32)length;  }  else {    *aLength = 0;  }  return NS_OK;}