PUnion (Providence Core 1.10.2 API)

All Superinterfaces:

java.lang.Comparable<Union>, PMessage<Union,Field>, PValue<Union>, net.morimekta.util.Stringable
```
public interface PUnion<Union extends PUnion<Union,Field>,Field extends PField>
extends PMessage<Union,Field>
```
Base class for all unions.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Field`	`unionField()`	The user should be able to assume that this value never is null.
`boolean`	`unionFieldIsSet()`

Methods inherited from interface java.lang.Comparable
compareTo

Methods inherited from interface net.morimekta.providence.PMessage
asString, descriptor, get, get, has, has, mergeWith, mutate

- Method Detail
  - unionFieldIsSet
```
boolean unionFieldIsSet()
```
    Returns:
    
    Returns true if the union has a field set. If true unionField() will not throw an exception.
  - unionField
```
@Nonnull
Field unionField()
```
    The user should be able to assume that this value never is null.
    
    Returns:
    
    The field set on the union.
    
    Throws:
    
    java.lang.IllegalStateException - If no field is set.