docs: def CheckDataStoreAccess(self, token, subjects, requested_access="r"):
      """Allow all access if token and requested access are valid."""
      if any(not x for x in subjects):
        raise ValueError("Subjects list can't contain empty URNs.")
      subjects = list(map(rdfvalue.RDFURN, subjects))
  
      return (ValidateAccessAndSubjects(requested_access, subjects) and
              ValidateToken(token, subjects) and
              (token.supervisor or
               self._CheckAccessWithHelpers(token, subjects, requested_access)))