def validate_access!
        action = self.action_name
        clearance_levels = Array(current_clearance_levels)
        authorized = clearance_levels.any? { |c| keeper.lets? c, action, self.class }
        not_authorized! unless authorized
      end
def validate_access!
        action = self.action_name
        clearance_levels = Array(current_clearance_levels)
        authorized = clearance_levels.any? { |c| keeper.lets? c, action, self.class }
        not_authorized! unless authorized
      end
Validate access to the current route.