GossipManagerBuilder { public static ManagerBuilder newBuilder() { return new ManagerBuilder(); }  static ManagerBuilder newBuilder();  }
@Test public void idShouldNotBeNull() { expectThrows(IllegalArgumentException.class,() -> { GossipManagerBuilder.newBuilder().cluster("aCluster").build(); }); }
@Test public void clusterShouldNotBeNull() { expectThrows(IllegalArgumentException.class,() -> { GossipManagerBuilder.newBuilder().id("id").build(); }); }
@Test public void settingsShouldNotBeNull() { expectThrows(IllegalArgumentException.class,() -> { GossipManagerBuilder.newBuilder().id("id").cluster("aCluster").build(); }); }