Param Reference

@Param Reference

@Param is placed on a method parameter to declare it as a command argument.

Property	Type	Default	Description
`name`	`String`	—	Display name used in the auto-generated usage message.
`required`	`boolean`	`true`	Whether the argument is mandatory. Optional arguments appear as `[name]` in the usage message.
`concated`	`boolean`	`false`	Joins all remaining arguments into a single `String`. Shown as `<name..>` in the usage message.
`defaultValue`	`String`	`""`	Raw value passed through the processor when the argument is omitted. Requires `required = false`.

Only one concated = true parameter is allowed per command, and it must be the last one.
defaultValue is a raw string — it goes through the same processor chain as a normally supplied argument.
A parameter with no @Param annotation is treated as the CommandSender — there can only be one per method.