We should centralize shared headers. This can be made cleaner post-gaxios migration. Discussion: https://github.com/googleapis/nodejs-storage/pull/2305#discussion_r1336449564 This can also be iterated on in Node 18+ by returning a [Headers](https://developer.mozilla.org/en-US/docs/Web/API/Headers) object (as today headers are case-sensitive while they shouldn't be).
We should centralize shared headers. This can be made cleaner post-gaxios migration.
Discussion: #2305 (comment)
This can also be iterated on in Node 18+ by returning a Headers object (as today headers are case-sensitive while they shouldn't be).