The name of the subcommand to search for.
Optional. The command node to start the search from. - If null, the search is performed only among this command’s immediate subcommands. - If non-null, the search is recursive starting from root and checks all nested subcommands.
The first Command matching the specified name, or null if no match is found.
Searches for a subcommand with the specified name.
This function can search either the immediate subcommands of this command or recursively within a specified subcommand tree.