IHierarchyVisitor (ph-commons 11.1.0 API)

Type Parameters:

DATATYPE - The data type to be visited

All Known Implementing Classes:

ChildrenProviderHierarchyVisitor

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface IHierarchyVisitor<DATATYPE>
```
Visitor interface

Author:

Philip Helger

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`visit(DATATYPE aStartObject, boolean bInvokeOnStartObject)`	Visit all objects, starting specified one.

- Method Detail
  - visit
```
void visit(@Nullable
           DATATYPE aStartObject,
           boolean bInvokeOnStartObject)
```
    Visit all objects, starting specified one.
    
    Parameters:
    
    aStartObject - The object to start from. May be null to indicate the hierarchy root.
    
    bInvokeOnStartObject - true to indicate that the callback should also be invoked on the first element, false to indicate that the callback should only be invoked for the children of the passed element.