Server side Direction API response cannot be loaded to DirectionsRenderer in the client

Hello,

I'm using `"@googlemaps/google-maps-services-js": "^3.4.0"`
I'm trying to use Directions API on the server side and pass the `directions()` response to the client to render. This is done so the client can stay lean and keyless while the server decides when the directions need to be recalculated.

Due to a different schema, the response returned (`DirectionsResponseData`) cannot be set in the client using `setDirections()`.
Not sure if this is intended and how to resolve the issue. A manual transformation might be possible but I want to make sure I'm not missing anything and understand the reason for the diff.