UnionType.Builder (Closure Compiler v20200719 API)

java.lang.Object
- com.google.javascript.rhino.jstype.UnionType.Builder

Enclosing class:

UnionType
```
public static final class UnionType.Builder
extends java.lang.Object
```
Implements type unioning logic, since UnionTypes only actually need to perform unioning operations when being (re)built.
UnionType.Builders exist in two forms. One for assembing a new union and one for updating an existing union. Only the former is exposed.
Most users of this class should prefer JSTypeRegistry.createUnionType(com.google.javascript.rhino.jstype.JSType...) instead.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`UnionType.Builder`	`addAlternate(JSType alternate)`	Adds an alternate to the union type under construction.
`UnionType.Builder`	`addAlternates(java.util.Collection<? extends JSType> c)`
`UnionType.Builder`	`addAlternates(java.util.List<? extends JSType> list)`
`JSType`	`build()`	Returns a type, not necessarily a `UnionType`, that represents the union of the inputs.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - addAlternates
```
public UnionType.Builder addAlternates(java.util.Collection<? extends JSType> c)
```
  - addAlternates
```
public UnionType.Builder addAlternates(java.util.List<? extends JSType> list)
```
  - addAlternate
```
public UnionType.Builder addAlternate(JSType alternate)
```
    Adds an alternate to the union type under construction.
    Returns this for easy chaining.
  - build
```
public JSType build()
```
    Returns a type, not necessarily a UnionType, that represents the union of the inputs.
    The UnionType.Builder cannot be used again once this method is called.