#[connect_impl]Expand description
#[connect_impl] — attribute macro applied to a Connect service impl
block that validates the borrowed request view at the top of every handler
method, without converting it to an owned message. Requires Validate on
the generated view type.
Guarantees protovalidate runs for every RPC without relying on per-handler
discipline.
Only exported when the connect feature is enabled (the default), since
the emitted code calls ValidationError::into_connect_error.