### Question:
ExperimenterSerializerKeyFactory { public static ExperimenterIdSerializerKey<ExperimenterDataOfChoice> createExperimenterMessageSerializerKey( short msgVersion, long experimenterId, long type) { return new ExperimenterIdTypeSerializerKey<>(msgVersion, experimenterId, type, ExperimenterDataOfChoice.class); }  static ExperimenterIdSerializerKey<ExperimenterDataOfChoice> createExperimenterMessageSerializerKey(
            short msgVersion, long experimenterId, long type); static ExperimenterIdSerializerKey<ExperimenterDataOfChoice> createMultipartRequestSerializerKey(
            short msgVersion, long experimenterId, long type); static ExperimenterIdSerializerKey<TableFeatureProperties> createMultipartRequestTFSerializerKey(
            short msgVersion, long experimenterId); static ExperimenterIdSerializerKey<MeterBandExperimenterCase> createMeterBandSerializerKey(
            short msgVersion, long experimenterId); static ExperimenterIdSerializerKey<MeterBandExperimenterCase> createMeterBandSerializerKey(
            short msgVersion, long experimenterId, Class<? extends ExperimenterMeterBandSubType> meterSubType);  }### Answer:
@Test public void testCreateExperimenterMessageSerializerKey() throws Exception { ExperimenterIdSerializerKey<?> createdKey; ExperimenterIdSerializerKey<?> comparationKey; createdKey = ExperimenterSerializerKeyFactory .createExperimenterMessageSerializerKey(EncodeConstants.OF10_VERSION_ID, 42L, 1L); comparationKey = new ExperimenterIdTypeSerializerKey<>(EncodeConstants.OF10_VERSION_ID, 42L, 1L, ExperimenterDataOfChoice.class); Assert.assertEquals("Wrong key created", comparationKey, createdKey); }