### Question:
ResourceToModelMapper { protected void unbindProcessor(ResourceModelPostProcessor postProcessor) { if (postProcessor == null) { return; } this.postProcessors.remove(postProcessor); }  T map(final Resource resource, final ResolvedModelSource<T> resolvedModelSource);  }### Answer:
@Test public void testRemovalOfNullPostProcessorDoesNotCauseException() { this.testee.unbindProcessor(null); }