@Test
void handle() {

    assertThat(SUT.packetConsumer, nullValue());
    SUT.handle(o -> o.notify());
    assertThat(SUT.commands, hasSize(0));
    assertThat(SUT.packetConsumer, notNullValue());
    assertThrows(ConversationContext.PlcWiringException.class, () -> SUT.handle(o -> o.notify()));
}