I currently have a HashMap in the form 'HashMap<String, HashSet>', which contains a key (an item) and a value (a HashSet of all items associated with that item).

I am trying to write a method within the class that retrieves the key (item) with the most values (items) associated with it and am not sure how to do this, for example:

Input:

```
myItems.mostValues();

```

Output:

```
Item1 is has the most interactions, as it is connected to 3 items: {X, Y, Z}

```