[Anthill-pro] Scripted Lockable Resource - Once Per Agent

[Mark Melvin]

Is there a way to have the a workflow emit a scripted lockable resource
that allows a single instance of a specific lock "per-Agent"?  I
basically want to accomplish exactly what the scripted example in the
docs accomplishes (EnvironmentLookup.getCurrent().getName() +
"-server"), but I want to return the current Agent name, no the
environment name.  I tried this:

AgentHelper.getCurrent().getName() + "-some-identifier";

..but this throws a NullPointerException as AgentHelper.getCurrent()
seems to return null.  How do I get a handle to the current agent?

Thanks,
Mark.