Transcoding Data Modeled with YANG

YANG (RFC 7950) is a standardized data modeling language. The data may be encoded in XML (RFC 7950), JSON (RFC 7951), plain CBOR (RFC 9254) or CBOR with standins (draft-bormann-cbor-yang-standin). This document specifies how to convert data modeled by YANG encoded in one of the formats into another format. Use cases include e.g. local transcoding between Netconf and Restconf for tool compatibility, or reverse proxying while composing multiple backends. This document also defines a data annotation for additional value type specification. That data annotation behavior updates RFC 7950, RFC 7951 and RFC 9254.