int insertRule(
String rule,
[int index]
)

Not documented.

Source

int insertRule(String rule, [int index]) {
  if (index != null) {
    return _blink.BlinkCSSStyleSheet.instance.insertRule_Callback_2_(unwrap_jso(this), rule, index);
  }
  return _blink.BlinkCSSStyleSheet.instance.insertRule_Callback_1_(unwrap_jso(this), rule);
}