import ( "bytes" "encoding/json" xdr "github.com/calmh/xdrwriter" ) func encodeAsXDR(data interface{}) []byte { var buf bytes.Buffer w := xdr.NewWriter(&buf) if err := w.Write(data); err != nil { panic(err) } return buf.Bytes() }In this example, the "encodeAsXDR" function takes any Go-compatible data format and serializes it to XDR format using the "xdr.NewWriter" interface. The resulting byte array can then be written to disk or transmitted over a network. One real-world example of XDR usage is in the Remote Procedure Call (RPC) protocol used by the Network File System (NFS). The "calmh/xdr" package is a useful tool for encoding and decoding the data payloads in this protocol.