qbit/consul-client/src/main/java/io/advantageous/consul/endpoints/AgentEndpoint.java
public void warn(String checkId, String note) throws NotRegisteredException {
        checkTtl(checkId, Status.WARN, note);
    }
public void warn(String checkId, String note) throws NotRegisteredException {
        checkTtl(checkId, Status.WARN, note);
    }
Sets a TTL check to "warning" state with a note.

@param checkId check id
@param note    note