There is a command group 'az_network_vnet'. This group of commands could 'check if a private ip address is available for use within a virtual network'. 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_create'.The syntax is: az network vnet create --name
                       --resource-group
                       [--address-prefixes]
                       [--ddos-protection {0, 1, f, false, n, no, t, true, y, yes}]
                       [--ddos-protection-plan]
                       [--dns-servers]
                       [--location]
                       [--network-security-group]
                       [--no-wait {0, 1, f, false, n, no, t, true, y, yes}]
                       [--subnet-name]
                       [--subnet-prefixes]
                       [--subnets]
                       [--tags]
                       [--vm-protection {0, 1, f, false, n, no, t, true, y, yes}]. The 1th example of the child command would be to use it to 'create a virtual network with a specific address prefix and one subnet', the syntax is: az network vnet create -g MyResourceGroup -n MyVnet --address-prefix 10.0.0.0/16 --subnet-name MySubnet --subnet-prefixes 10.0.0.0/24. The 2th example of the child command would be to use it to 'create a virtual network', the syntax is: az network vnet create --address-prefixes 10.0.0.0/16 --name MyVirtualNetwork --resource-group MyResourceGroup --subnet-name MyAseSubnet --subnet-prefixes 10.0.0.0/24. The parameter '--name -n' is required. It is used to the virtual network (vnet) name.. 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 '--address-prefixes' is optional. space-separated list of ip address prefixes for the vnet. default: 10.0.0.0/16.  support shorthand-syntax, json-file and yaml-file. try "??" to show more.. The parameter '--ddos-protection' is optional. control whether ddos protection is enabled.. The parameter '--ddos-protection-plan' is optional. name or id of a ddos protection plan to associate with the vnet.. The parameter '--dns-servers' is optional. space-separated list of dns server ip addresses.  support shorthand-syntax, json-file and yaml-file. try "??" to show more.. The parameter '--location -l' is optional. resource location.. The parameter '--network-security-group --nsg' is optional. name or id of a network security group (nsg).. The parameter '--no-wait' is optional. do not wait for the long-running operation to finish.. The parameter '--subnet-name' is optional. name of a new subnet to create within the vnet.. The parameter '--subnet-prefixes' is optional. space-separated list of address prefixes in cidr format for the new subnet. if omitted, automatically reserves a /24 (or as large as available) block within the vnet address space.  support shorthand-syntax, json-file and yaml-file. try "??" to show more.. The parameter '--subnets' is optional. manage a list of subnets in a virtual network (similar to `az network vnet subnet`).  support shorthand-syntax, json-file and yaml-file. try "??" to show more.. The parameter '--tags' is optional. space-separated tags: key[=value] [key[=value] ...].  support shorthand-syntax, json-file and yaml-file. try "??" to show more.. The parameter '--vm-protection' is optional. enable vm protection for all subnets in the vnet.. 