private function describeChildProcedures($children, $output, $depth)
    {
        if (is_array($children)) {
            $output->writeln(sprintf('%s<comment>SUB-PROCEDURES</comment>', str_repeat(' ', $depth)));

            foreach ($children as $child) {
                $this->describeProcedure($child, $output, $depth + 2);
                $output->writeln('');
            }
        }
    }