how to clone request testStep with missing required interface to a new Project using groovy scripts

Hi,

when I try to click "Clone TestStep", it will appear a dialog, shows:

Target project [Rest Activation Project] is missing required Interfaces;

myOwnInterface

These will be cloned to the targetProject as well

could some one tell me how I can do this in my groovy scripts?

I always got missing resource, missing property error, and apparently it doesn't copy the required Interface to my new project

I using this statements:

newTestCase.cloneStep(testStep, testStep.name);