After Symfony calls ``createToken``, it willthen call ``supportsToken`` on

yourclass (and any other authentication listeners)to figure out who should

handle it. Thisis just a wayto allow several authentication mechanismsto

be usedfor the same firewall (that way, you canfor instance firsttryto

authenticate the user via a certificateor an API keyand fall backto a

form login).

Mostly, you just needto make sure that this method returns ``true``for a

token that has been created by ``createToken``. Your logic should probably

look exactly like this example.