There is a command group 'az_network_vnet gateway_root cert'. This group of commands could 'manage root certificates of a virtual network gateway'. 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_vnet gateway_root cert_create'.The syntax is: az network vnet-gateway root-cert create --gateway-name
                                         --name
                                         --public-cert-data
                                         --resource-group
                                         [--no-wait {0, 1, f, false, n, no, t, true, y, yes}]. The 1th example of the child command would be to use it to 'add a root certificate to the list of certs allowed to connect to this gateway', the syntax is: az network vnet-gateway root-cert create -g MyResourceGroup -n MyRootCertificate --gateway-name MyVnetGateway --public-cert-data MyCertificateData. The parameter '--gateway-name' is required. It is used to virtual network gateway name.. The parameter '--name -n' is required. It is used to root certificate name.. The parameter '--public-cert-data' is required. It is used to base64 contents of the root certificate file or file path.. 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 '--no-wait' is optional. do not wait for the long-running operation to finish.. 