There is a command group 'az_network_vwan'. This group of commands could 'manage virtual wans'. 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_network_vwan_update'.The syntax is: az network vwan update [--add]
                       [--branch-to-branch-traffic {false, true}]
                       [--disable-vpn-encryption {false, true}]
                       [--force-string]
                       [--ids]
                       [--name]
                       [--office365-category]
                       [--remove]
                       [--resource-group]
                       [--security-provider-name]
                       [--set]
                       [--subscription]
                       [--tags]
                       [--type {basic, standard}]. The parameter '--add' is optional. add an object to a list of objects by specifying a path and key value pairs.  example: `--add property.listproperty <key=value, string or json string>`.. The parameter '--branch-to-branch-traffic' is optional. allow branch-to-branch traffic flow.. The parameter '--disable-vpn-encryption' is optional. state of vpn encryption.. The parameter '--force-string' is optional. when using 'set' or 'add', preserve string literals instead of attempting to convert to json.. The parameter '--ids' is optional. one or more resource ids (space-delimited). it should be a complete resource id containing all information of 'resource id' arguments. you should provide either --ids or other 'resource id' arguments.. The parameter '--name -n' is optional. name of the virtual wan.. The parameter '--office365-category' is optional. the office local breakout category.. The parameter '--remove' is optional. remove a property or an element from a list.  example: `--remove property.list <indextoremove>` or `--remove propertytoremove`.. The parameter '--resource-group -g' is optional. name of resource group. you can configure the default group using `az configure --defaults group=<name>`.. The parameter '--security-provider-name' is optional. the security provider name.. The parameter '--set' is optional. update an object by specifying a property path and value to set.  example: `--set property1.property2=<value>`.. The parameter '--subscription' is optional. name or id of subscription. you can configure the default subscription using `az account set -s name_or_id`.. The parameter '--tags' is optional. space-separated tags: key[=value] [key[=value] ...]. use "" to clear existing tags.. The parameter '--type' is optional. the type of the virtualwan.. 