### Question:
JsonMergePatchExample extends JsonExample { public JsonValue deleteValue() { JsonValue source = Json.createValue("{\"colour\":\"blue\"}"); JsonValue patch = Json.createValue("{\"colour\":null}"); JsonMergePatch jsonMergePatch = Json.createMergePatch(patch); return jsonMergePatch.apply(source); }  JsonValue changeValue(); JsonValue addValue(); JsonValue deleteValue();  }### Answer:
@Test @Ignore public void givenPatch_deleteValue() throws Exception { JsonMergePatchExample jsonMergePatchExample = new JsonMergePatchExample(); JsonValue result = jsonMergePatchExample.deleteValue(); assertThat(((JsonString) result).getString()).isEqualToIgnoringCase("{}"); }