SERIALIZER

object SERIALIZER : Serializer<Node>

deserialize	`fun deserialize(input: DataInput2, available: Int): Node?`
serialize	`fun serialize(out: DataOutput2, value: Node): Unit`

deserializeFromLong	`open fun deserializeFromLong(input: Long, available: Int): A` Deserializes and returns the content of the given long.
fixedSize	`open fun fixedSize(): Int` Returns the fixed size of the serialized form in bytes or -1 if the size is not fixed (e.g. for Strings). Some optimizations can be applied to serializers with a fixed size.
isTrusted	`open fun isTrusted(): Boolean` Returns if this Serializer is trusted to always read the same number of bytes as it writes for any given object being serialized/de-serialized. MapDB has a relaxed record size boundary checking. It expects deserializers to read exactly as many bytes as were written during serialization. If a deserializer reads more bytes than it wrote, it might start reading others record data in store. Some serializers (Kryo) have problems with this. To prevent this, we can not read data directly from a store, but we must copy them into separate `byte[]` buffers. Thus, zero-copy optimizations are disabled by default, but can be explicitly enabled here by letting this method return `true`. This flag indicates if this serializer was 'verified' to read as many bytes as it writes. It should also be much better tested etc.
needsAvailableSizeHint	`open fun needsAvailableSizeHint(): Boolean` TODO: Document this method