private function printPathMappingStateHeader(IO $io, $pathMappingState)
    {
        switch ($pathMappingState) {
            case PathMappingState::ENABLED:
                $io->writeLine('The following path mappings are currently enabled:');
                $io->writeLine('');

                return;
            case PathMappingState::NOT_FOUND:
                $io->writeLine('The target paths of the following path mappings were not found:');
                $io->writeLine('');

                return;
            case PathMappingState::CONFLICT:
                $io->writeLine('Some path mappings have conflicting paths:');
                $io->writeLine(' (add the module names to the "override-order" key in puli.json to resolve)');
                $io->writeLine('');

                return;
        }
    }