String writable

Gets the current value of the $writable config. If it does not exist, then null is returned.

Source 

String get writable => configs[r"$writable"];
void writable=(value)

Sets the value of the writable config. If this is set to null, then the writable config is removed.

Source 

set writable(value) {
  if (value == null) {
    configs.remove(r"$writable");
  } else if (value is bool) {
    if (value) {
      configs[r"$writable"] = "write";
    } else {
      configs.remove(r"$writable");
    }
  } else {
    configs[r"$writable"] = value.toString();
  }

  updateList(r"$writable");
}