method Http2ServerResponse.prototype.addTrailers
Usage in Deno
```typescript import { Http2ServerResponse } from "node:node__http2.d.ts"; ```
Http2ServerResponse.prototype.addTrailers(trailers: OutgoingHttpHeaders): void
This method adds HTTP trailing headers (a header but at the end of the
message) to the response.
Attempting to set a header field name or value that contains invalid characters
will result in a `TypeError` being thrown.
trailers: OutgoingHttpHeaders
void