code: def add_roles(self, databaseName, roleNames, collectionName=None):
          
          for roleName in roleNames:
              self.add_role(databaseName, roleName, collectionName)
docs: Add multiple roles
          
          Args:
              databaseName (str): Database Name
              roleNames (list of RoleSpecs): roles
              
          Keyword Args:
              collectionName (str): Collection
          
          Raises:
              ErrRoleException: role not compatible with the databaseName and/or collectionName