ConfigNode
A node in the syntax tree for a HOCON or JSON document.
Note: at present there is no way to obtain an instance of this interface, so please ignore it. A future release will make syntax tree nodes available in the public API. If you are interested in working on it, please see: <a href="https://github.com/lightbend/config/issues/300"
Because this object is immutable, it is safe to use from multiple threads and there's no need for "defensive copies."
Do not implement interface ConfigNode; it should only be
implemented by the config library. Arbitrary implementations will not work
because the library internals assume a specific concrete implementation.
Also, this interface is likely to grow new methods over time, so third-party
implementations will break.