The :method:`Symfony\\Component\\Security\\Core\\Authorization\\Voter\\AbstractVoter::getSupportedClasses`

method tells Symfony that your voter should be called whenever an object of one

of the given classes is passed to ``isGranted()``. For example, if you return

``array('AppBundle\Model\Product')``, Symfony will call your voter when a

``Product`` object is passed to ``isGranted()``.

The :method:`Symfony\\Component\\Security\\Core\\Authorization\\Voter\\AbstractVoter::getSupportedAttributes`

method tells Symfony that your voter should be called whenever one of these

strings is passed as the first argument to ``isGranted()``. For example, if you

return ``array('CREATE', 'READ')``, then Symfony will call your voter when one

of these is passed to ``isGranted()``.

The :method:`Symfony\\Component\\Security\\Core\\Authorization\\Voter\\AbstractVoter::isGranted`

method must implement the business logic that verifies whether or not a given

user is allowed access to a given attribute (e.g. ``CREATE`` or ``READ``) on a

given object. This method must return a boolean.