IdentitySets (GWT DEV 2.7.0)

```
public class IdentitySets
extends Object
```
Utility methods for operating on memory-efficient identity sets. All sets of size 0 or 1 are assumed to be immutable. All sets of size greater than 1 are assumed to be mutable.

Constructors
Constructor and Description
`IdentitySets()`

Methods
Modifier and Type	Method and Description
`static <T> Set<T>`	`add(Set<T> set, T toAdd)`
`static <T> Set<T>`	`create()`
`static <T> Set<T>`	`create(T... items)`
`static <T> Set<T>`	`create(T item)`
`static <T> Set<T>`	`normalize(Set<T> set)`
`static <T> Set<T>`	`normalizeUnmodifiable(Set<T> set)`
`static <T> Set<T>`	`remove(Set<T> set, T toRemove)`

public static <T> Set<T> add(Set<T> set,
             T toAdd)

public static <T> Set<T> create(T item)

public static <T> Set<T> create(T... items)

public static <T> Set<T> normalize(Set<T> set)

public static <T> Set<T> normalizeUnmodifiable(Set<T> set)

public static <T> Set<T> remove(Set<T> set,
                T toRemove)

Class IdentitySets