Groovy access to outputFolder set by maven-soapui-plugin

I am running my soapUI tests using the maven plugin. I have set the output folder to a value that I wish to access in a soapUI test's Groovy Script test step. (I am wanting to generate a report and write it to the same folder specified by the outputFolder setting).

I tried testRunner.outputFolder in the Groovy Script, but got an error stating MockTestRunner has no outputFolder property.

I had read a previous posting suggesting com.eviware.soapui.SoapUI.cmdLineRunner?.outputFolder, but this returned null.

Any help is appreciated.