There is a command group 'az_devops_admin_banner'. This group of commands could 'manage organization banner'. 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_devops_admin_banner_add'.The syntax is: az devops admin banner add --message
                           [--detect {false, true}]
                           [--expiration]
                           [--id]
                           [--org]
                           [--type {error, info, warning}]. The parameter '--message -m' is required. It is used to message (string) to show in the banner.. The parameter '--detect' is optional. automatically detect organization.. The parameter '--expiration' is optional. date/time when the banner should no longer be presented to users. if not set, the banner does not automatically expire and must be removed with the remove command. example : "2019-06-10 17:21:00 utc", "2019-06-10".. The parameter '--id' is optional. identifier for the new banner. this identifier is needed to change or remove the message later. a unique identifier is automatically created if one is not specified.. The parameter '--org --organization' is optional. azure devops organization url. you can configure the default organization using az devops configure -d organization=org_url. required if not configured as default or picked up via git config. example: https://dev.azure.com/myorganizationname/.. The parameter '--type -t' is optional. type of banner to present. defaults is "info".. 