FileMetadata type missing null on metadata for delete

[p-young]

For the property 'metadata' on type FileMetadata (which is used in places like File.setMetadata())

It is typed as Record<string, string>, but it needs to allow null too (so Record<string, string | null>)

Null is used to delete the key, as in the documentation:
https://googleapis.dev/nodejs/storage/latest/File.html#setMetadata

Thanks and let me know if you have any questions

[p-young]

Additionally, although not in the documentation, 'metadata' would also accept boolean value fields and it would work.

metadata: { someKey: true }

Should it be Record<string, boolean | null | string>?

Previously, it was just type 'object' which allowed many values.

Thanks