add method
void
add(})
Implementation
void add(String key, Encoding encoding, {
List<String> alt = const <String>[],
String? group, String? series,
int? nr, String? variant, int remains = 0}) {
if(this.hasKey(key)) {
throw EncodingKeyUsedErr(key, encoding, this);
}
this._recs.add(etr(
key, encoding, alt: alt, group: group,
series: series, nr: nr, variant: variant));
if(remains <= 0) this._recs.sort();
}