There is a command group 'az_eventgrid_extension topic'. This group of commands could 'manage azure event grid extension topics'. 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_eventgrid_extension topic_show'.The syntax is: az eventgrid extension-topic show --scope. The 1th example of the child command would be to use it to 'show the details of an extension topic', the syntax is: az eventgrid extension-topic show --scope /subscriptions/{SubID}/resourceGroups/{RG}/providers/Microsoft.Storage/storageAccounts/{StorageAccountName}. The parameter '--scope' is required. It is used to the identifier of the resource to which extension topic is queried. the scope can be a subscription, or a resource group, or a top level resource belonging to a resource provider namespace. for example, use '/subscriptions/{subscriptionid}/' for a subscription, '/subscriptions/{subscriptionid}/resourcegroups/{resourcegroupname}' for a resource group, and '/subscriptions/{subscriptionid}/resourcegroups/{resourcegroupname}/providers/{resourceprovidernamespace}/{resourcetype}/{resourcename}' for azure resource.. 