applePayConfigString property
      
      String
      get
      applePayConfigString
      
    
    
Apple Pay configuration JSON string.
This getter provides a complete Apple Pay configuration including:
- Merchant identifier and display name
- Supported payment capabilities (3DS, debit, credit)
- Supported card networks (Visa, Mastercard, Amex, etc.)
- Country and currency codes
- Required contact fields for billing and shipping
The configuration is formatted as a JSON string ready for use with Apple Pay APIs.
Implementation
static String get applePayConfigString =>
    '''{
"provider": "apple_pay",
"data": {
  "merchantIdentifier": "$merchantIdentifier",
  "displayName": "Amwal",
  "merchantCapabilities": ["3DS", "debit", "credit"],
  "supportedNetworks": ["amex", "visa", "discover", "masterCard"],
  "countryCode": "OM",
  "currencyCode": "OMR",
  "requiredBillingContactFields": [],
  "requiredShippingContactFields": []
}
}''';