sFontSpecificationMap
sFontSpecificationMap, sColorMap
nsSVGDefsElement::IsAttributeMapped(const nsIAtom* name) const{  static const MappedAttributeEntry* const map[] = {    sTextContentElementsMap,    sFontSpecificationMap  };    return FindAttributeDependence(name, map, NS_ARRAY_LENGTH(map)) ||    nsSVGDefsElementBase::IsAttributeMapped(name);}