package main //go:generate depstubber -vendor github.com/Masterminds/squirrel "" Expr,StatementBuilder import ( "encoding/json" "fmt" ) func marshal(version interface{}) string { versionJSON, err := json.Marshal(version) if err != nil { return fmt.Sprintf("error: '%v'", err) // OK } return string(versionJSON) } type StringWrapper struct { s string } func marshalUnmarshal(w1 StringWrapper) (string, error) { buf, err := json.Marshal(w1) if err != nil { return "", err } var w2 StringWrapper json.Unmarshal(buf, &w2) return fmt.Sprintf("wrapped string: '%s'", w2.s), nil // OK }