- /**
- *
- * Returns child context as if it was walked by
- * {@link BindingStreamEventWriter}. This means that to enter case, one
- * must issue getChild(ChoiceClass).getChild(CaseClass).
- *
- * @param childClass
- * @return Context of child node or null, if supplied class is not subtree child
- * @throws IllegalArgumentException If supplied child class is not valid in specified context.
- */