code: public function getInstallPath(PackageInterface $package)
  	{
  		$prefix = substr($package->getPrettyName(), 0, 14);
  		if ('kehikko/route-' !== $prefix)
  		{
  			throw new \InvalidArgumentException(
  				'Unable to install template, kehikko routes should always start their package name with '
  				. '"kehikko/route/"'
  			);
  		}
  
  		return 'routes/' . substr($package->getPrettyName(), 14);
  	}
docs: {@inheritDoc}