@Override public <KK, VV> MutableMap<KK, VV> aggregateBy( Function<? super V, ? extends KK> groupBy, Function0<? extends VV> zeroValueFactory, Function2<? super VV, ? super V, ? extends VV> nonMutatingAggregator) { return this.delegate.aggregateBy(groupBy, zeroValueFactory, nonMutatingAggregator); }
@Override public <KK, VV> MutableMap<KK, VV> aggregateBy( Function<? super V, ? extends KK> groupBy, Function0<? extends VV> zeroValueFactory, Function2<? super VV, ? super V, ? extends VV> nonMutatingAggregator) { return this.delegate.aggregateBy(groupBy, zeroValueFactory, nonMutatingAggregator); }