https://registry.npmjs.org/vary/-/vary-1.1.2.tgz;downloadfilename=npm2/vary-1.1.2.tgz;sha512sum=04d19b58b7ddd1e50f69b8645d4566d23f2ebaf444c93879a2f45afddca8c3f06a01b649c82fb97d4f88cd03b39802b362a6110084a8461750af778867f3d7aa