--dry-run doesn't work as advertised

[enegron-sl]

built-in help mentions a general --dry-run option:

Options: -h --help Show this help. -c --config <file> Config file in YAML format. By default CLI will look for file named "smartling.yml" in current directory and in all intermediate parents, emulating git behavior. -p --project <project> Project ID to operate on. This option overrides config value "project_id". -a --account <account> Account ID to operate on. This option overrides config value "account_id". --user <user> User ID which will be used for authentication. This option overrides config value "user_id". --secret <secret> Token Secret which will be used for authentication. This option overrides config value "secret". -s --short Use short list output, usually outputs only first column, e.g. file URI in case of files list. -l --locale <locale> Sets locale to filter by or operate upon. Depends on command. -d --directory <dir> Sets directory to operate on, usually, to store or to read files. Depends on command. [default: .] -z --authorize Authorize all locales while pushing file. Incompatible with -l option. -b --branch <branch> Prepend specified value to the file URI. -t --type <type> Specify file type. Depends on command. -r --directive <dir> Directives to add to push request in form of <name>=<value>. --dry-run Do not actually perform action, just log it. --threads <number> If command can be executed concurrently, it will be executed for at most <number> of threads. [default: 4] -k --insecure Skip HTTPS certificate validation. --proxy <url> Use specified URL as proxy server. --smartling-url <url> Specify base Smartling URL, merely for testing purposes. -v --verbose Sets verbosity level for logging messages. Specify flag several time to increase verbosity. Useful when debugging and investigating unexpected behavior.

But when I try to use it with files push program echos back usage to me.