CardFaceData
data class CardFaceData(val docType: String, val displayName: String?, val typeDisplayName: String?, val fields: Map<String, String>, val dates: Map<String, LocalDate>, val portrait: ByteArray?)
What a CardFace draws from: the credential's values, already rendered as text.
Parameters
fields
element id → display value (text as-is, dates as ISO YYYY-MM-DD, numbers, booleans).
dates
element id → date, for date elements (use date for dd/MM/yyyy).
portrait
the holder's photo (JPEG/PNG bytes), if the credential has one.