addAll method
Adds all associations of other
to this multimap.
The operation is equivalent to doing this[key] = value
for each key and
associated value in other. It iterates over other
, which must therefore
not change during the iteration.
This implementation iterates through each key of other
and adds the
associated values to this instance via addValues
.
Implementation
@override
void addAll(Multimap<K, V> other) => other.forEachKey(addValues);