MapAssert misses hasSameSizeAs(Map<K, V> other)

[dobias]

The MapAssert API misses the following method imho:
public MapAssert<K, V> hasSameSizeAs(Map<K, V> other)

With the current API I can only pass in an Object[] or an Iterable, but since I use the MapAssert because I'm dealing with java.util.Map I want to be able to pass in my actual results map in the hasSameSizeAs method.