mergeReduce

public final Map<K, V> mergeReduce<K extends Any, V extends Any>(List<Map<K, V>> $self, Function2<V, V, V> reduce)
public final Map<K, V> mergeReduce<K extends Any, V extends Any>(    Map<K, V> $self,     List<Map<K, V>> others,     Function2<V, V, V> reduce)