@Test public void unknown() throws Exception { assertThat(Topology.unknown() .configuration(), is(Configuration.UNKNOWN)); }
static Topology unknown() { return UNKNOWN; }
Topology { static Topology unknown() { return UNKNOWN; } }
Topology { static Topology unknown() { return UNKNOWN; }  }
Topology { static Topology unknown() { return UNKNOWN; }   }
Topology { static Topology unknown() { return UNKNOWN; }    }