The new function could be part of PgUtil.getStream
The responseDelegateClass is or collectionClazz is not applicable here.. This streamGet is ONLY to be used for responses with resultInfo.schema.
From routingContext, the HTTP response can be generated.
In case of an error after the first record has been sent the connection is closed prematurely. There is no other error reporting. We do not use error reporting using HTTP trailer ( https://tools.ietf.org/html/rfc7230#section-4.1.2 ).