code: function InstallGetter(object, name, getter, attributes, prefix) {
    %CheckIsBootstrapping();
    if (IS_UNDEFINED(attributes)) attributes = DONT_ENUM;
    SetFunctionName(getter, name, IS_UNDEFINED(prefix) ? "get" : prefix);
    %FunctionRemovePrototype(getter);
    %DefineGetterPropertyUnchecked(object, name, getter, attributes);
    %SetNativeFlag(getter);
  }
docs: Helper function to install a getter-only accessor property.