public String name()
Returns the name of this thread group.

 public ThreadGroupReference parent()
Returns the parent of this thread group.

 public  void resume()
Resumes all threads in this thread group. Each thread
in this group and in all of its subgroups will be
resumed as described in ThreadReference#resume .

 public  void suspend()
Suspends all threads in this thread group. Each thread
in this group and in all of its subgroups will be
suspended as described in ThreadReference#suspend .
This is not guaranteed to be an atomic
operation; if the target VM is not interrupted at the time
this method is
called, it is possible that new threads will be created
between the time that threads are enumerated and all of them
have been suspended.

 public List<ThreadGroupReference> threadGroups()
Returns a List containing each active ThreadGroupReference  in this
thread group. Only the active thread groups in this immediate thread group
(and not its subgroups) are returned.
See java.lang.ThreadGroup
for information about 'active' ThreadGroups.

 public List<ThreadReference> threads()
Returns a List containing a ThreadReference  for each live thread
in this thread group. Only the live threads in this immediate thread group
(and not its subgroups) are returned.  A thread is alive if it
has been started and has not yet been stopped.