src/Command/Processor/KeyPrefixProcessor.php
public static function first(CommandInterface $command, $prefix)
    {
        if ($arguments = $command->getArguments()) {
            $arguments[0] = "$prefix{$arguments[0]}";
            $command->setRawArguments($arguments);
        }
    }
public static function first(CommandInterface $command, $prefix)
    {
        if ($arguments = $command->getArguments()) {
            $arguments[0] = "$prefix{$arguments[0]}";
            $command->setRawArguments($arguments);
        }
    }
public static function first ( CommandInterface $ command , $ prefix ) { if ( $ arguments = $ command -> getArguments ( ) ) { $ arguments [ 0 ] = "$prefix{$arguments[0]}" ; $ command -> setRawArguments ( $ arguments ) ; } }
Applies the specified prefix only the first argument.

@param CommandInterface $command Command instance.
@param string           $prefix  Prefix string.
Applies the specified prefix only the first argument .