There is a command group 'az_storage_container_immutability policy'. This group of commands could 'manage container immutability policies'. 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_storage_container_immutability policy_create'.The syntax is: az storage container immutability-policy create --account-name
                                                --container-name
                                                [--allow-protected-append-writes {false, true}]
                                                [--allow-protected-append-writes-all]
                                                [--if-match]
                                                [--period]
                                                [--resource-group]. The parameter '--allow-protected-append-writes -w' is optional. this property can only be changed for unlocked time-based retention policies. when enabled, new blocks can be written to an append blob while maintaining immutability protection and compliance. only new blocks can be added and any existing blocks cannot be modified or deleted. this property cannot be changed with extendimmutabilitypolicy api.. 