Module request 

Building one request and sending it.

The body is assembled by splicing fragments of finished JSON - the encoded state, the pre-escaped model name, the prepared questions - rather than by building a value and encoding it, so a call costs one pass over the state and nothing over anything else.

The builder ends in a plain async fn, not an IntoFuture: on the pinned toolchain an unboxed IntoFuture needs an unstable associated type, so the choice is between a boxed future on every call and a method call the caller writes. The method call is free.

Structs

SystemOne

A System One request, ready to be configured and sent.