annotated with @ListenerConfiguration but does not implement SoapUIListener

 I create a plugin to do something after the new test case is created ,so i created my 

@ListenerConfiguration
public class TestSuiteConfigureListener extends TestSuiteListenerAdapter {

	

	@Override
	public void testCaseAdded(TestCase testCase) {
		// TODO Auto-generated method stub
		//super.testCaseAdded(testCase);

		UISupport.showErrorMessage("ERRROR");
		
		UISupport.showErrorMessage("ERRROR2");
		//super.testCaseAdded(testCase);
	}
}

Then after the plugin is loaded ,it throws the below error:

Thu Nov 12 18:23:17 PST 2015:WARN:Class class com.cucumberpeople.listeners.TestSuiteConfigureListener is annotated with @ListenerConfiguration but does not implement SoapUIListener

But i create a sample class for : TestRunListenerAdapter listener ,it works well ,

anyone could you give me some detail what happened for this listener ???