There is a command group 'az_iot_hub_digital twin'. This group of commands could 'manipulate and interact with the digital twin of an iot hub device'. 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_iot_hub_digital twin_update'.The syntax is: az iot hub digital-twin update --device-id
                               --json-patch
                               [--etag]
                               [--hub-name]
                               [--login]
                               [--resource-group]. The 1th example of the child command would be to use it to 'update a digital twin via json patch specification', the syntax is: az iot hub digital-twin update --hub-name {iothub_name} --device-id {device_id} --json-patch '{"op":"add", "path":"/thermostat1/targetTemperature", "value": 54}'. The 2th example of the child command would be to use it to 'update a digital twin via json patch specification', the syntax is: az iot hub digital-twin update -n {iothub_name} -d {device_id} --json-patch '[
  {"op":"remove", "path":"/thermostat1/targetTemperature"},
  {"op":"add", "path":"/thermostat2/targetTemperature", "value": 22}
]'. The 3th example of the child command would be to use it to 'update a digital twin property via json patch specification defined in a file', the syntax is: az iot hub digital-twin update -n {iothub_name} -d {device_id} --json-patch ./my/patch/document.json. The parameter '--device-id -d' is required. It is used to target device id.. The parameter '--json-patch --patch' is required. It is used to an update specification described by json-patch. operations are limited to add, replace and remove. provide file path or inline json.. The parameter '--etag -e' is optional. etag or entity tag corresponding to the last state of the resource. if no etag is provided the value '*' is used.. The parameter '--hub-name -n' is optional. iot hub name or hostname. required if --login is not provided.. The parameter '--login -l' is optional. this command supports an entity connection string with rights to perform action. use to avoid session login via "az login". if both an entity connection string and name are provided the connection string takes priority. required if --hub-name is not provided.. The parameter '--resource-group -g' is optional. name of resource group. you can configure the default group using `az configure --defaults group=<name>`.. 