There is a command group 'az_load_test_server metric'. This group of commands could 'command group to manage server metrics'. The group of commands has global parameter '--debug' which means 'Increase logging verbosity to show all debug logs.'. The group of commands has global parameter '--help -h' which means 'Show this help message and exit.'. The group of commands has global parameter '--only-show-errors' which means 'Only show errors, suppressing warnings.'. The group of commands has global parameter '--output -o' which means 'Output format.'. The group of commands has global parameter '--query' which means 'JMESPath query string. See <a href="http://jmespath.org/">http://jmespath.org/</a> for more information and examples.'. The group of commands has global parameter '--subscription' which means 'Name or ID of subscription. You can configure the default subscription using `az account set -s NAME_OR_ID`.'. The group of commands has global parameter '--verbose' which means 'Increase logging verbosity. Use --debug for full debug logs.'. This group contains a child command 'az_load_test_server metric_list'.The syntax is: az load test server-metric list --load-test-resource
                                --test-id
                                [--resource-group]. The 1th example of the child command would be to use it to 'list all server metrics for a test', the syntax is: az load test server-metric list --test-id sample-test-id --load-test-resource sample-alt-resource --resource-group sample-rg. The parameter '--load-test-resource --name -n' is required. It is used to name or arm resource id of the load testing resource.. The parameter '--test-id -t' is required. It is used to test id of the load test.. The parameter '--resource-group -g' is optional. name of resource group. you can configure the default group using `az configure --defaults group=<name>`.. 