event.setNamespace(namespace); Map<String, String> metadata = Maps.newHashMap(); metadata.put("m1", "v1");
event.setNamespace(namespace); Map<String, String> metadata = Maps.newHashMap(); metadata.put("m1", "v1"); event.setNamespace(namespace); metadata = Maps.newHashMap(); metadata.put("k1", "v1");
event.setNamespace(namespace); Map<String, String> metadata = Maps.newHashMap(); metadata.put(tag1, metadataValue1);