Is there a way to define which subcommand should be executed if no subcommand is specified? Let's say we have 3 subcommands, each with their own set of options:

/command subcommand1 options_for_sc1
/command subcommand2 options_for_sc2
/command subcommand3 options_for_sc3

Is it possible to make this valid, where the user skips the subcommand and it is assumed to be subcommand1, i.e.

/command options

is interpreted as

/command subcommand1 options_for_sc1