Note that getTraits will NOT return any traits inherited from a parent.
This is currently viewed as the desired behavior. See https://bugs.php.net/bug.php?id=61554
(PHP >= 5.4.0)
ReflectionClass::getTraits — Returns an array of traits used by this class
This function is currently not documented; only its argument list is available.
This function has no parameters.
Returns an array with trait names in keys and instances of trait's
ReflectionClass in values.
NULL in case of an error.