void collapse(
[bool toStart]
)

Not documented.

Source

void collapse([bool toStart]) {
  if (toStart != null) {
    _blink.BlinkRange.instance.collapse_Callback_1_(unwrap_jso(this), toStart);
    return;
  }
  _blink.BlinkRange.instance.collapse_Callback_0_(unwrap_jso(this));
  return;
}