import org.semanticweb.owlapi.model.OWLPropertyExpressionVisitorEx; //导入依赖的package包/类
/**
 * Testing correctness of converting nested inverses
 */
@Test
public void testNestedInverses() {
	
	
	OWLDataFactory factory = new OWLDataFactoryImpl();
	OWLObjectProperty r = factory.getOWLObjectProperty(IRI.create("R"));
	OWLObjectPropertyExpression ri = factory.getOWLObjectInverseOf(r);
	
	OWLPropertyExpressionVisitorEx<ElkObjectPropertyExpression> converter = OwlObjectPropertyExpressionConverterVisitor
			.getInstance();

	ElkObjectPropertyExpression s = r.accept(converter);
	ElkObjectPropertyExpression si = ri.accept(converter);

	assertTrue(s instanceof ElkObjectProperty);
	assertTrue(si instanceof ElkObjectInverseOf);

	ElkIri expectedIri = ((ElkObjectProperty) s).getIri();

	assertEquals(expectedIri, ((ElkObjectInverseOf) si).getObjectProperty()
			.getIri());
		
}
 

import org.semanticweb.owlapi.model.OWLPropertyExpressionVisitorEx; //导入依赖的package包/类
@Override
public <O> O accept(OWLPropertyExpressionVisitorEx<O> visitor) {
    return visitor.visit(this);
}