MultiSet (PFL Basic 4.0.1-b002 API)

```
public class MultiSet<E>
extends Object
```
A simple abstraction of a MultiSet, that is, a "set" that can contain more than one copy of the same element. I am implementing only the bare minimum that is required for now.

Constructors
Constructor and Description
`MultiSet()`

Methods
Modifier and Type	Method and Description
`void`	`add(E element)`
`boolean`	`contains(E element)`
`static void`	`main(String[] args)`
`void`	`remove(E element)`
`int`	`size()` Return the number of unique elements in this MultiSet.

size
```
public int size()
```
Return the number of unique elements in this MultiSet.

public static void main(String[] args)

Class MultiSet<E>