I've donwloaded JMeter 3.1 and am trying to run a junit sampler.
Per these instructions jmeter.apache.org/usermanual/junitsampler_tutorial.pdf I've added a ThreadGroup to test plan, i select add->sampler, but do not find Junit.
This is what I see. What am I missing? no jmeter on menu
Here is an example photo I found on the tutorial.
enter image description here
I do have a junit class in a jar in the lib/junit folder.

