JerryFunction (jodd-lagarto 6.0.5 API)

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 JerryFunction
```
Callback function for iterating nodes.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  java.lang.Boolean onNode(Jerry node, int index)
  Invoked on node.

- Method Detail
  - onNode
```
java.lang.Boolean onNode(Jerry node,
                         int index)
```
    Invoked on node. Returns true or null to continue looping. The reason why it returns a Boolean is because when Jerry is used in Nashorn, when javascript method returns nothing it means it's not false.