clear method
void
clear()
Implementation
void clear() {
if (readOnly) throw StateError('This set is readonly');
configs.clear();
cachedHashCode = -1;
configLookup!.clear();
}
void clear() {
if (readOnly) throw StateError('This set is readonly');
configs.clear();
cachedHashCode = -1;
configLookup!.clear();
}