TestPipeline: @Rule error message confusing/javadoc doesn't explain proper usage

I'm working on JdbcIOIT. Trying to run the checked-in version, I encountered this error:
"Attempted to run a pipeline while it's enforcement level was not set. Are you using TestPipeline without a @Rule annotation?"

This error does not give me enough information to diagnose:
a) what problem is occurring
b) what I can do to solve it

Checking the javadocs for TestPipeline, I don't see any information about @Rule or anything of that nature.

I did some github blame-ing on that string, and found BEAM-1205 and the accompanying PR, however it was also unclear from BEAM-1205 exactly what I'm supposed to do to make this test work.