toKeyIList method
Returns an IList of the map keys.
Optionally, you may provide a config
for the list.
The list will be sorted if the map's sort
configuration is true
,
or if you explicitly provide a compare
method.
Implementation
IList<K> toKeyIList({
int Function(K? a, K? b)? compare,
ConfigList? config,
}) {
var result = IList.withConfig(keys, config ?? IList.defaultConfig);
if (compare != null || this.config.sort) result = result.sort(compare);
return result;
}