SEP-2322 requestState: an opaque, server-owned string that lets a
stateless server reconstruct its in-progress work on the retry. When
non-empty it is emitted as a top-level requestState field; the client
MUST echo it back verbatim (and MUST NOT inspect or modify it).
SEP-2322 requestState: an opaque, server-owned string that lets a stateless server reconstruct its in-progress work on the retry. When non-empty it is emitted as a top-level requestState field; the client MUST echo it back verbatim (and MUST NOT inspect or modify it).