Note
Most objects also support standard Java propertyListeners used for observing changes.
Notifies when projects get added/removed/opened/closed.
Notifies when workspaces are switched.
Notifies when APIs, test suites, virtual APIs, and environments get added/removed.
Notifies when projects are loaded/saved.
Notifies when Operations and Requests are added/removed.
Notifies when test cases, test steps, load tests, and security tests are added/removed.