In "phalcon model" command help, --trace option is explained as below:

 --trace              Shows the trace of the framework in case of exception. [optional]

However, this option would have no effect. In scripts/Phalcon/Commands/Builtin/Model.php, --trace option is defined in L51 but not contained in ModelBuilder constructor parameter(L71).

In addition, there is no code to use --trace option in scripts/Phalcon/Builder/Model.php.

Is --trace option not implemented yet? If it is already implemented, how can I try --trace option?