Composite.Visitor (TheseFoolishThings 3.2-ALPHA-21 API)

Enclosing interface:

Composite<T,F extends Finder<? extends T>>
```
public static interface Composite.Visitor<T,R>
```

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default java.util.Optional<R>`	`getValue()`	Returns the value of this visitor.
`default void`	`postVisit(T object)`	Visits an object.
`default void`	`preVisit(T object)`	Visits an object.
`default void`	`visit(T object)`	Visits an object.

- Method Detail
  - preVisit
```
default void preVisit(@Nonnull
                      T object)
```
    Visits an object. This method is called before visiting children (pre-order).
    
    Parameters:
    
    object - the visited object
  - visit
```
default void visit(@Nonnull
                   T object)
```
    Visits an object. This method is actually called just after preVisit(Object), it makes sense to implement it when you don't need to distinguish between pre-order and post-order traversal.
    
    Parameters:
    
    object - the visited object
  - postVisit
```
default void postVisit(@Nonnull
                       T object)
```
    Visits an object. This method is called after visiting children (post-order).
    
    Parameters:
    
    object - the visited object
  - getValue
```
@Nonnull
default java.util.Optional<R> getValue()
```
    Returns the value of this visitor.
    
    Returns:
    
    the value