code: public CouchDbMultifactorAuthenticationTrustRecord merge(final MultifactorAuthenticationTrustRecord other) {
          setId(other.getId());
          setPrincipal(other.getPrincipal());
          setDeviceFingerprint(other.getDeviceFingerprint());
          setRecordDate(other.getRecordDate());
          setRecordKey(other.getRecordKey());
          setName(other.getName());
          return this;
      }
docs: Merge other record into this one for updating.
  @param other record to be merged into this one
  @return this