There is a command group 'az_staticwebapp_backends'. This group of commands could 'link or unlink a prexisting backend with a static web app  also known as  bring your own api'. 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_staticwebapp_backends_unlink'.The syntax is: az staticwebapp backends unlink --name
                                --resource-group
                                [--environment-name]
                                [--remove-backend-auth]. The 1th example of the child command would be to use it to 'unlink static app backends', the syntax is: az staticwebapp backends unlink -n MyStaticAppName -g MyResourceGroup. The 2th example of the child command would be to use it to 'unlink backend from static web app environment and remove auth config from backend', the syntax is: az staticwebapp backends unlink -n MyStaticAppName -g MyResourceGroup --environment-name MyEnvironmentName --remove-backend-auth. The parameter '--name -n' is required. It is used to name of the static site.. The parameter '--resource-group -g' is required. It is used to name of resource group. you can configure the default group using `az configure --defaults group=<name>`.. The parameter '--environment-name' is optional. name of the environment of static site.. The parameter '--remove-backend-auth' is optional. if set to true, removes the identity provider configured on the backend during the linking process.. 