Adds an argument.
public addArgument ( string $name, integer $mode = null, string $description = '', mixed $default = null ) : |
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$name | string | The argument name |
$mode | integer | The argument mode: InputArgument::REQUIRED or InputArgument::OPTIONAL |
$description | string | A description text |
$default | mixed | The default value (for InputArgument::OPTIONAL mode only) |
return | The current instance |