There is a command group 'az_k8s extension_extension types'. This group of commands could 'commands to discover kubernetes extension types'. 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_k8s extension_extension types_list by location'.The syntax is: az k8s-extension extension-types list-by-location --location
                                                  [--cluster-type {appliances, connectedclusters, managedclusters}]
                                                  [--plan-name]
                                                  [--plan-product]
                                                  [--plan-publisher]
                                                  [--release-train]. The 1th example of the child command would be to use it to 'list available cluster extension types in a region', the syntax is: az k8s-extension extension-types list-by-location --location eastus. The parameter '--location -l' is required. It is used to name of the location. values from: `az account list-locations`.. The parameter '--cluster-type -t' is optional. specify arc clusters or aks managed clusters or arc appliances.. The parameter '--plan-name' is optional. the plan name is referring to the marketplace plan id of the extension.. The parameter '--plan-product' is optional. the plan product is referring to the marketplace product id of the extension.. The parameter '--plan-publisher' is optional. the plan publisher is referring to the marketplace publisher id of the extension.. The parameter '--release-train' is optional. specify the release train for the extension type.. 