initialize static method
dynamic
initialize({})
initialize the pluging by entering your id and public key. For 'publicKey' enter the entire key, even -----BEGIN RSA PUBLIC KEY-----
Implementation
static initialize({required String companyID,
required String publicKeySTRING, required bool setTestMode}){
GetItPayments._companyId = companyID;
GetItPayments._publicKeyString = publicKeySTRING;
GetItPayments._testMode = setTestMode;
debugPrint("Getit payments initialized");
}