Well, I was wanting to at least somewhat conform to the api shape of multimap.  containsValue(foo) is a method on multimap.  But to assert abotu a key/value pair, you do 

```
ASSERT.that(myMultimap).whoseValuesFor("foo").has().item(entry("foo","bar"))...
```

Oh god, that's so gross...  Grr.  

Ok - short-cut.  But I'm thinking hasValue("foo").forKey("bar");  ?