Laravel Command - break param description into two lines

Question

I use Laravel 5.8. In one of my artisan command files I have a parameter with quiet long description, which I would like to break into 2 lines:

class GenerateReport extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'report:generate
                            {--myparam : long description to be broken into several lines}';

I tried \n and <br>, but both are printed out as text. For example, if I add \n after the word description the output of php artisan report:generate -h is:

Description:
  Command description...

Usage:
  report:generate [options]

Options:
      --myparam         long description\nto be broken into several lines
  -h, --help            Display this help message
  -q, --quiet           Do not output any message
  -V, --version         Display this application version
      --ansi            Force ANSI output
      --no-ansi         Disable ANSI output
  -n, --no-interaction  Do not ask any interactive question
      --env[=ENV]       The environment the command should run under
  -v|vv|vvv, --verbose  Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

I also dived into vendor code, but could not figure out how to do it (in some place I could not continue following the code).

I found this article, but it seems this is not applied on the $signature printing.

Any idea?