public void setAdditionalVersionWeights(java.util.Map<String, Double> additionalVersionWeights) {
        this.additionalVersionWeights = additionalVersionWeights == null ? null : new com.amazonaws.internal.SdkInternalMap<String, Double>(
                additionalVersionWeights);
    }
<p>
The second version, and the percentage of traffic that's routed to it.
</p>

@param additionalVersionWeights
       The second version, and the percentage of traffic that's routed to it.
aws-java-sdk-lambda/src/main/java/com/amazonaws/services/lambda/model/AliasRoutingConfiguration.java