anchor.diff:      cuttlefish_unit:assert_config(Config, "riak_core.ssl.certfile", "/absolute/etc/cert.pem"),
       cuttlefish_unit:assert_config(Config, "riak_core.ssl.keyfile", "/absolute/etc/key.pem"),
       cuttlefish_unit:assert_config(Config, "riak_core.ssl.cacertfile", "/absolute/etc/cacertfile.pem"),
  +    cuttlefish_unit:assert_config(Config, "riak_core.handoff_ip", "1.2.3.4"),
       cuttlefish_unit:assert_config(Config, "riak_core.handoff_port", 8888),
       cuttlefish_unit:assert_config(Config, "riak_core.handoff_ssl_options.certfile", "/tmp/erlserver.pem"),
       cuttlefish_unit:assert_config(Config, "riak_core.handoff_ssl_options.keyfile", "/tmp/erlkey/pem"),
  
positive.code: %% in real life.
  context() ->
      [
          {handoff_port, "8099"},
          {platform_bin_dir , "./bin"},
          {platform_data_dir, "./data"},
  
negative.code:     cuttlefish_unit:assert_not_configured(Config, "riak_core.ssl.certfile"),
      cuttlefish_unit:assert_not_configured(Config, "riak_core.ssl.keyfile"),
      cuttlefish_unit:assert_not_configured(Config, "riak_core.ssl.cacertfile"),
      cuttlefish_unit:assert_config(Config, "riak_core.handoff_ip", "0.0.0.0"),
      cuttlefish_unit:assert_config(Config, "riak_core.handoff_port", 8099 ),
      cuttlefish_unit:assert_not_configured(Config, "riak_core.handoff_ssl_options"),
      cuttlefish_unit:assert_config(Config, "riak_core.dtrace_support", false),
  