const CATCH_ALL_MARKERS: &[&str];Expand description
Serialised forms of the catch-all variants that stand in for a wire
value the decoder does not model (#[serde(other)]).
"other" is not defensive padding. Seven of the eight reachable
catch-alls are unit variants that serialise to a bare "unknown";
WorkflowProgressEvent::Other is internally tagged and serialises to
{"type":"other"}, so what changes is the nested type key, which
exists on both sides and is reached through the object walk.