nsDocumentFragment::Supports(const nsString& aFeature, const nsString& aVersion,
nsDocumentFragment::Supports(const nsAReadableString& aFeature, const nsAReadableString& aVersion,
nsDocumentFragment::Supports(const nsString& aFeature, const nsString& aVersion,                             PRBool* aReturn){  return nsGenericElement::InternalSupports(aFeature, aVersion, aReturn);}