fetch method
Fetches a plan given Plan ID
@param planId - The unique identifier of the plan
Implementation
Future<RazorpayPlan> fetch({
required String planId,
}) async {
if (planId.isEmpty) {
throw ArgumentError(MISSING_ID_ERROR);
}
final url = '$BASE_URL/$planId';
return api.get<RazorpayPlan>(
{'url': url},
fromJsonFactory: RazorpayPlan.fromJson,
).then((response) => response.data!);
}