There is a command group 'az_webpubsub_hub'. This group of commands could 'commands to manage webpubsub hub settings'. 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_webpubsub_hub_update'.The syntax is: az webpubsub hub update --hub-name
                        [--add]
                        [--allow-anonymous {false, true}]
                        [--event-handler]
                        [--force-string]
                        [--ids]
                        [--name]
                        [--remove]
                        [--resource-group]
                        [--set]
                        [--subscription]. The 1th example of the child command would be to use it to 'update event handler settings of a hub', the syntax is: az webpubsub hub update -n MyWebPubSub -g MyResourceGroup --hub-name MyHub --event-handler url-template="http://host.com" user-event-pattern="MyEvent" --event-handler url-template="http://host2.com" system-event="connected" system-event="disconnected" auth-type="ManagedIdentity" auth-resource="uri://myUri". The 2th example of the child command would be to use it to 'update to allow anonymous connection', the syntax is: az webpubsub hub update -n MyWebPubSub -g MyResourceGroup --hub-name MyHub --allow-anonymous true. The parameter '--hub-name' is required. It is used to the hub to manage.. 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 '--allow-anonymous' is optional. set if anonymous connections are allowed for this hub. true means allow and false means deny.. The parameter '--event-handler' is optional. template item for event handler settings. use key=value pattern to set properties. supported keys are "url-template", "user-event-pattern", "system-event", "auth-type" and "auth-resource". setting multiple "system-event" results in an array and for other properties, only last set takes active.. 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 webpubsub.. 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 '--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`.. 