This testcase exercises ThreadGroupReference.Children command.
At first the test starts ChildrenDebuggee.
Then the test with help of the ThreadGroupReference.Children command checks
that the group 'PARENT_GROUP' has one child thread - 'TESTED_THREAD'
and one child group - 'CHILD_GROUP'.
Fields inherited from org.apache.harmony.jpda.tests.jdwp.share.JDWPSyncTestCase