InboundEndpoint ep = eb.buildInboundEndpoint();
assertNotNull(ep.getFilter());
assertTrue(ep.getFilter() instanceof ExpressionFilter);
ExpressionFilter filter = (ExpressionFilter) ep.getFilter();
assertEquals("custom", filter.getEvaluator());
assertEquals("a.b.c", filter.getExpression());
assertEquals("something", filter.getCustomEvaluator());
assertFalse(filter.isNullReturnsTrue());
}