from command.c:1120
static const struct command_registration command_subcommand_handlers[] = {
{
.name = "mode",
.mode = COMMAND_ANY,
.jim_handler = jim_command_mode,
.usage = "[command_name ...]",
.help = "Returns the command modes allowed by a command: "
"'any', 'config', or 'exec'. If no command is "
"specified, returns the current command mode. "
"Returns 'unknown' if an unknown command is given. "
"Command can be multiple tokens.",
},
COMMAND_REGISTRATION_DONE
};