### Question:
AliasGroupBeanInfo extends SimpleBeanInfo { @Override public PropertyDescriptor[] getPropertyDescriptors() { try { PropertyDescriptor[] result = new PropertyDescriptor[2]; result[0] = new PropertyDescriptor(IPropertyNames.ID, AliasGroup.class, "getIdentifier", "setIdentifier"); result[0] = new PropertyDescriptor(IPropertyNames.NAME, AliasGroup.class, "getName", "setName"); return result; } catch (IntrospectionException e) { throw new Error(e); } }  @Override PropertyDescriptor[] getPropertyDescriptors();  }### Answer:
@Test public final void testGetPropertyDescriptors() { assertNotNull(classUnderTest.getPropertyDescriptors()); }