public RegistrationConfig withWatchlistIds(java.util.Collection<String> watchlistIds) {
        setWatchlistIds(watchlistIds);
        return this;
    }
<p>
The identifiers of watchlists that a fraudster is registered to. If a watchlist isn't provided, the fraudsters
are registered to the default watchlist.
</p>

@param watchlistIds
       The identifiers of watchlists that a fraudster is registered to. If a watchlist isn't provided, the
       fraudsters are registered to the default watchlist.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-voiceid/src/main/java/com/amazonaws/services/voiceid/model/RegistrationConfig.java