There is a command group 'az_notification hub_namespace'. This group of commands could 'commands to manage notification hub namespace'. 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_notification hub_namespace_list'.The syntax is: az notification-hub namespace list [--max-items]
                                   [--next-token]
                                   [--resource-group]. The 1th example of the child command would be to use it to 'list available namespaces within a resource group', the syntax is: az notification-hub namespace list --resource-group MyResourceGroup. The 2th example of the child command would be to use it to 'list all the available namespaces within the subscription irrespective of the resource groups', the syntax is: az notification-hub namespace list. The parameter '--max-items' is optional. total number of items to return in the command's output. if the total number of items available is more than the value specified, a token is provided in the command's output. to resume pagination, provide the token value in `--next-token` argument of a subsequent command.. The parameter '--next-token' is optional. token to specify where to start paginating. this is the token value from a previously truncated response.. The parameter '--resource-group -g' is optional. name of resource group. you can configure the default group using `az configure --defaults group=<name>`.. 