mpesaStkpushQueryUrL top-level constant Null safety
Implementation
const String mpesaStkpushQueryUrL = 'https://api.safaricom.co.ke/mpesa/stkpushquery/v1/query';
const String mpesaStkpushQueryUrL = 'https://api.safaricom.co.ke/mpesa/stkpushquery/v1/query';