### Question:
ChannelzProtoUtil { static SubchannelRef toSubchannelRef(InternalWithLogId obj) { return SubchannelRef .newBuilder() .setSubchannelId(obj.getLogId().getId()) .setName(obj.toString()) .build(); } private  ChannelzProtoUtil();  static final String SO_LINGER; static final String SO_TIMEOUT; static final String TCP_INFO; }### Answer:
@Test public void toSubchannelRef() { assertEquals(subchannelRef, ChannelzProtoUtil.toSubchannelRef(subchannel)); }