data.go
func NewData() (*Data, error) {
	d := newData()
	return d, handleError(C.gpgme_data_new(&d.dh))
}
func NewData() (*Data, error) {
	d := newData()
	return d, handleError(C.gpgme_data_new(&d.dh))
}
// NewData returns a new memory based data buffer