code: def _getusers(self, ids=None, names=None, match=None):
          
          params = {}
          if ids:
              params['ids'] = self._listify(ids)
          if names:
              params['names'] = self._listify(names)
          if match:
              params['match'] = self._listify(match)
          if not params:
              raise BugzillaError('_get() needs one of ids, '
                                  ' names, or match kwarg.')
  
          return self._proxy.User.get(params)
docs: Return a list of users that match criteria.
  
          :kwarg ids: list of user ids to return data on
          :kwarg names: list of user names to return data on
          :kwarg match: list of patterns.  Returns users whose real name or
              login name match the pattern.
          :raises XMLRPC Fault: Code 51: if a Bad Login Name was sent to the
                  names array.
              Code 304: if the user was not authorized to see user they
                  requested.
              Code 505: user is logged out and can't use the match or ids
                  parameter.
  
          Available in Bugzilla-3.4+