How to create DataSource(of type Grid) test step programaticalla via Groovy/Java

Hi Team,

I am working on one project to automate test steps creation in a test case.

I need to create a project, test suite, test case. In the test case, I need to add data source step programmatically.

Here is my code in Java. Stuck here. Need help on how to create data source step of type Grid and add rows.

WsdlTestSuite ts =  wadlProject.addNewTestSuite("HelloTestSuite");
WsdlTestCase tc = ts.addNewTestCase("HelloTestCase1");
//WsdlTestStep testStep = tc.addTestStep("datasource","datasource");
TestStepConfig testStepConfig = TestStepConfig.Factory.newInstance();
testStepConfig.setType("datasource");
testStepConfig.setName("SoapUI Pro DataSource");
ProPlaceholderStepFactory.WsdlProPlaceholderTestStep testStep = (ProPlaceholderStepFactory.WsdlProPlaceholderTestStep)tc.addTestStep(testStepConfig);