{{block "UnmarshalJSON" . -}}
    pval, perr := {{.ValName}}.ParseString()
    if perr != nil {
	    return {{.Value}}, fmt.Errorf("read [%v]:%w", []string{ {{- .Keys "i" -}} }, perr)
    }

    return {{.Value}}, {{.Value}}.UnmarshalJSON([]byte(pval))
{{- end }}