public void setKeys(java.util.Collection<String> keys) {
        if (keys == null) {
            this.keys = null;
            return;
        }

        this.keys = new java.util.ArrayList<String>(keys);
    }
<p>
S3 keys made available using this asset.
</p>

@param keys
       S3 keys made available using this asset.
aws-java-sdk-dataexchange/src/main/java/com/amazonaws/services/dataexchange/model/S3DataAccessAsset.java