docs: def do_refresh(self,args):
          """Refresh the view of the log group"""
          # prints all the groups: pprint(AwsConnectionFactory.getLogClient().describe_log_groups())
  
          response = AwsConnectionFactory.getLogClient().describe_log_groups(logGroupNamePrefix=self.stackResource.physical_resource_id)
          if not 'logGroups' in response:
              raise Exception("Expected log group description to have logGroups entry. Got {}".format(response))
  
          # pprint(response)
          descriptions = [x for x in response['logGroups'] if x['logGroupName'] == self.stackResource.physical_resource_id]
          if not descriptions:
              raise Exception("Could not find log group {} in list {}".format(self.stackResource.physical_resource_id,response['logGroups']))
  
          self.description = descriptions[0]
  
          self.logStreams = self.loadLogStreams()
          print "== logStream"
          maxIndex = "{}".format(len(self.logStreams)+1)
          print "maxIndex:{}".format(maxIndex)
          frm = "  {{0:{}d}}: {{1}}".format(len(maxIndex))
          print frm
  
          index = 0
          for logStream in self.logStreams:
              print frm.format(index,logStream['logStreamName'])
              index += 1