SolanaPayRequest constructor
      const
      SolanaPayRequest({ 
    
    
- required Ed25519HDPublicKey recipient,
 - Decimal? amount,
 - Ed25519HDPublicKey? splToken,
 - Iterable<
Ed25519HDPublicKey> ? reference, - String? label,
 - String? message,
 - String? memo,
 
Implementation
const factory SolanaPayRequest({
  required Ed25519HDPublicKey recipient,
  Decimal? amount,
  Ed25519HDPublicKey? splToken,
  Iterable<Ed25519HDPublicKey>? reference,
  String? label,
  String? message,
  String? memo,
}) = _SolanaPayRequest;