forCode
Returns a localized user-facing message for a given error code. This method can be used to display an appropriate error message to the user.
Return
A localized error message, or null if the error code is not recognized.
Parameters
context
The object containing Android context information
code
The error code string from Stripe API (e.g., "incorrect_number", "card_declined")
declineCode
The decline code string from Stripe API (e.g., "insufficient_funds", "card_velocity_exceeded")