operator []= method
Implementation
void operator []=(
  _i2.String index,
  _i2.dynamic value,
) {
  _i4.setProperty(
    this,
    index,
    value,
  );
}void operator []=(
  _i2.String index,
  _i2.dynamic value,
) {
  _i4.setProperty(
    this,
    index,
    value,
  );
}