*aResult = nsnull; *aDefaultContent = nsnull; if (mContent) mPrototypeBinding->GetInsertionPoint(mBoundElement, mContent, aChild, aResult, aIndex, aDefaultContent); else if (mNextBinding) return mNextBinding->GetInsertionPoint(aChild, aResult, aIndex, aDefaultContent);
*aResult = mChildrenElement; NS_IF_ADDREF(*aResult);
nsXBLBinding::GetInsertionPoint(nsIContent* aChild, nsIContent** aResult, PRUint32* aIndex,                                 nsIContent** aDefaultContent){  *aResult = nsnull;  *aDefaultContent = nsnull;  if (mContent)    mPrototypeBinding->GetInsertionPoint(mBoundElement, mContent, aChild, aResult, aIndex, aDefaultContent);  else if (mNextBinding)    return mNextBinding->GetInsertionPoint(aChild, aResult, aIndex, aDefaultContent);  return NS_OK;}