"defaultRoutingKey",
"f1",
new DefaultObjectMapper());
Map<String, Object> msgMap = new ImmutableMap.Builder<String, Object>().put("f3", "v3").put("f2", "v2").build();
List<MessageContainer> messages = jsonLine.parse(jsonMapper.writeValueAsString(msgMap));
assertEquals(messages.size(), 1);
assertEquals(messages.get(0).getRoutingKey(), "defaultRoutingKey");
assertEquals(messages.get(0).getEntity(S3Consumer.typeReference), msgMap);
}