docs: def permissions(self):
          """
          A list of strings describing permissions.
  
          See Facebook's exhaustive `Permissions Reference <http://developers.facebook.com/docs/authentication/permissions/>`_
          for a list of available permissions.
          """
          response = self.graph.get('%s/permissions' % self.id)
  
          permissions = []
          for permission, state in response['data'][0].items():
              permissions.append(permission)
          
          return permissions