code: def find_object(self, pattern):
          obj = None
          error = None
          pattern = pattern.strip()
          if pattern == '*':
              obj = [h.host_name for h in list(self.all_elements.items.values())
                     if getattr(h, 'host_name', '') != '' and not h.is_tpl()]
              return obj, error
          if self.ctx == 'hostgroups':
              hgr = self.grps.find_by_name(pattern)
              if not hgr:
                  error = "Error : cannot find the %s of the expression '%s'" % (self.ctx, pattern)
                  return hgr, error
              elts = hgr.get_hosts()
              elts = strip_and_uniq(elts)
              if '*' in elts:
                  elts.extend([h.host_name for h in list(self.all_elements.items.values())
                               if getattr(h, 'host_name', '') != '' and not h.is_tpl()])
                  elts.remove('*')
              return elts, error
          obj = self.grps.find_hosts_that_use_template(pattern)
          return obj, error