pub fn decode_v2(decl: &TypeDecl, json: &Value) -> Result<Value, String>Expand description
Decode a plan 3 snapshot value strictly against its declared version 2
type (spec 032, 3.4): a nullable field accepts null or a missing key,
stored as null; a map is a JSON object within its bounds; a record that
fails its presence predicate is absent. Key existence is never presence.