Create P24 Source params.
a SourceParams that can be used to create a P24 source
A positive integer in the smallest currency unit representing the amount to charge the customer (e.g., 1099 for a €10.99 payment).
pln (P24 payments must be in either Euros or Polish Zloty).
The name of the account holder (optional).
The email address of the account holder.
The URL the customer should be redirected to after the authorization process.