@Test(expectedExceptions=AWSResponseException.class) public void testDescribeImagesWithInvalidFilter(){
  String region=getFirst(ec2Api.getConfiguredRegions(),null);
  assertNotNull(region,"region should not be null");
  Set allResults=client.describeImagesInRegion(region);
  assertNotNull(allResults);
  assertTrue(allResults.size() >= 2);
  String id1=allResults.iterator().next().getId();
  Set filterResult=client.describeImagesInRegionWithFilter(region,ImmutableMultimap.builder().put("invalid-filter-id",id1).build());
  assertNotNull(filterResult);
  assertEquals(filterResult.size(),1);
  assertEquals(filterResult.iterator().next().getId(),id1);
}