init
Initializes this collector from the server-provided JSON object.
Reads the key field (used as the collector's id) and the pairingKey field (passed to PingOneMFA.pair during collect). The pairingKey field is required: missing, empty, or JSON-null values throw IllegalArgumentException.
Return
This collector instance.
Parameters
input
The JSON object for this collector entry from the DaVinci node response.
Throws
If pairingKey is absent, empty, or JSON null.