The execution function you provide for a command.
IMPORTANT: Exec handlers should not modify the command structure (e.g., argsList, subCmdNodes) during execution. The command structure is considered immutable after parsing is complete.
The CommandNode instance for this command
Optional
The parsed result containing remaining args after -- (optional)
The command chain (sequence from root to this command) is accessible via cmd.cmdChain
cmd.cmdChain
The execution function you provide for a command.
IMPORTANT: Exec handlers should not modify the command structure (e.g., argsList, subCmdNodes) during execution. The command structure is considered immutable after parsing is complete.