class Jars::Installer

def vendor_jars(vendor_dir = nil, write_require_file: true)
  return unless jars?
  if Jars.to_prop(Jars::VENDOR) == 'false'
    vendor_dir = nil
  else
    vendor_dir ||= spec.require_path
  end
  do_install(vendor_dir, write_require_file)
end