There is a command group 'az_spring_app_log'. This group of commands could 'commands to tail app instances logs with multiple options  if the app has only one instance  the instance name is optional'. 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_spring_app_log_tail'.The syntax is: az spring app log tail --name
                       --resource-group
                       --service
                       [--deployment]
                       [--follow]
                       [--format-json]
                       [--instance]
                       [--limit]
                       [--lines]
                       [--since]. The parameter '--name -n' is required. It is used to the name of app running in the specified azure spring apps instance.. 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 '--service -s' is required. It is used to the name of azure spring apps instance, you can configure the default service using az configure --defaults spring=<name>.. The parameter '--deployment -d' is optional. name of an existing deployment of the app. default to the production deployment if not specified.. The parameter '--follow  -f' is optional. specify if the logs should be streamed.. The parameter '--format-json' is optional. format json logs if structured log is enabled.. The parameter '--instance -i' is optional. name of an existing instance of the deployment.. The parameter '--limit' is optional. maximum kilobytes of logs to return. ceiling number is 2048.. The parameter '--lines' is optional. number of lines to show. maximum is 10000.. The parameter '--since' is optional. only return logs newer than a relative duration like 5s, 2m, or 1h. maximum is 1h.. 