setFocus method
Implementation
void setFocus(int position) {
final maxIndex = _otpTextFieldState.widget.length - 1;
if (position > maxIndex) {
throw new Exception(
"Provided position is out of bounds for the OtpTextField");
}
final focusNodes = _otpTextFieldState._focusNodes;
final focusNode = focusNodes[position];
if (focusNode != null) {
focusNode.requestFocus();
}
}