There is a command group 'az_dt_model'. This group of commands could 'manage dtdl models and definitions on a digital twins instance'. 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_dt_model_create'.The syntax is: az dt model create --dt-name
                   [--failure-policy {none, rollback}]
                   [--fd]
                   [--max-models-per-batch]
                   [--models]
                   [--resource-group]. The 1th example of the child command would be to use it to 'bulk upload all  json or  dtdl model files from a target directory  model processing is recursive', the syntax is: az dt model create -n {instance_or_hostname} --from-directory {directory_path}. The 2th example of the child command would be to use it to 'upload model json inline or from file path', the syntax is: az dt model create -n {instance_or_hostname} --models {file_path_or_inline_json}. The parameter '--dt-name --dtn -n' is required. It is used to digital twins instance name or hostname. if an instance name is provided, the user subscription is first queried for the target instance to retrieve the hostname. if a hostname is provided, the subscription query is skipped and the provided value is used for subsequent interaction.. The parameter '--failure-policy --fp' is optional. indicates the failure policy when an error occurs while processing a models batch. in the 'rollback' mode all models created in previous batches are deleted one at a time. when selected as 'none' the models created in previous batches are not deleted from dt instance.. The parameter '--fd --from-directory' is optional. the directory json model files will be parsed from. please note: models are created atomically when directory contains 250 or lesser models, hence in case of an error none of the models get created.input model set is chunked & created in batches when directory has more than 250 models(api limit). in case of an error processing a batch, the behavior is determined by the --failure-policy parameter.. The parameter '--max-models-per-batch --mmpb' is optional. the maximum model size per batch when creating more than 250 models.reduce this number to prevent a dtdlparser error.. The parameter '--models' is optional. inline model json or file path to model json. please note: models are created atomically when model json contains 250 or lesser models, hence in case of an error none of the models get created.input model set is chunked & created in batches when model json has more than 250 models(api limit). in case of an error processing a batch, the behavior is determined by the --failure-policy parameter.. The parameter '--resource-group -g' is optional. digital twins instance resource group. you can configure the default group using `az configure --defaults group=<name>`.. 