code: def can_access_objective_hierarchy(self):
          
          url_path = construct_url('authorization',
                                   bank_id=self._catalog_idstr)
          return self._get_request(url_path)['objectiveHierarchyHints']['canAccessHierarchy']
docs: Tests if this user can perform hierarchy queries.
  
          A return of true does not guarantee successful authorization. A
          return of false indicates that it is known all methods in this
          session will result in a PermissionDenied. This is intended as a
          hint to an an application that may not offer traversal functions
          to unauthorized users.
  
          return: (boolean) - false if hierarchy traversal methods are not
                  authorized, true otherwise
          compliance: mandatory - This method must be implemented.