### Question:
VisibilityValidator implements ParameterValidator { @Override public String getParameterName() { return SupportedParameters.VISIBILITY; }  @Override boolean isValid(Object visibleTargets, final Map<String, Object> context); @Override Class<?> getContainerType(); @Override String getParameterName();  }### Answer:
@Test void testGetParameterName() { assertEquals("visibility", validator.getParameterName()); }