/**
* The objective of this test is to implement and expand upon the scenario
* described in the reference counting documentation and ensure that any node of
- * the Trace, Stream Class, Event Class, Stream and Event hiearchy keeps all
+ * the Trace, Stream Class, Event Class, Stream and Event hierarchy keeps all
* other "alive" and reachable.
*
* External tools (e.g. valgrind) should be used to confirm that this