REST Mock Response as a test step

How can I make a REST Mock Response test step?
I only see the option to add a SOAP Mock Response Test Step, is the same for REST not available?

This is to use SOAPUI as a message exchange simulator.

 

What I want to do:

1. Receive a REST message from my program [start a listener] - answer 200 OK

2. Send a REST message with the data to my program

Do this synchronous-ly, don't advance if the message hasn't been received

What I can't do:
Setup SoapUI to receive the REST message in a test case (I can do it manually by starting a mock but that's not good enough)

 

Any tips?

 

Many thanks!