```
public interface ValueNodes
```
Moved these nodes out of the ValueNode abstract class. This is to avoid this possible issue: Classes that refer to their own subclasses in their static initializers or in static fields. Such references can cause JVM-level deadlocks in multithreaded environment, when one thread tries to load superclass and another thread tries to load subclass at the same time.

Nested Classes
Modifier and Type	Interface	Description
`static class`	`ValueNodes.BooleanNode`
`static class`	`ValueNodes.ClassNode`
`static class`	`ValueNodes.JsonNode`
`static class`	`ValueNodes.NullNode`
`static class`	`ValueNodes.NumberNode`
`static class`	`ValueNodes.OffsetDateTimeNode`
`static class`	`ValueNodes.PathNode`
`static class`	`ValueNodes.PatternNode`
`static class`	`ValueNodes.PredicateNode`
`static class`	`ValueNodes.StringNode`
`static class`	`ValueNodes.UndefinedNode`
`static class`	`ValueNodes.ValueListNode`

Fields
Modifier and Type	Field	Description
`static ValueNodes.BooleanNode`	`FALSE`
`static ValueNodes.NullNode`	`NULL_NODE`
`static ValueNodes.BooleanNode`	`TRUE`
`static ValueNodes.UndefinedNode`	`UNDEFINED`

static final ValueNodes.NullNode NULL_NODE

static final ValueNodes.BooleanNode TRUE

static final ValueNodes.BooleanNode FALSE

static final ValueNodes.UndefinedNode UNDEFINED

Interface ValueNodes