fn check_error_details_to_send(m: &RequestError) -> Result<(), CodecError>Expand description
The sender’s half of check_error_details, plus Section 9.4.2:
“Senders MUST NOT repeat the same Error Detail type in a message unless
the type’s definition explicitly allows multiple instances.” Only
UNSUPPORTED_PROPERTY allows them, and a type this draft does not define is
the caller’s to repeat or not.