How can I add a "Property Transfer" step using Java API?

I have created a list of "Test Request" and need to transfer properties between these

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PropertyTransfersStepFactory propertyTransfersStepFactory = new PropertyTransfersStepFactory();

TestStepConfig stepConfig = propertyTransfersStepFactory.createNewTestStep(wsdlTestCase, name);

step = testCase.addTestStep(stepConfig);