public List<S3VersionSummary> getVersionSummaries() {
        return this.versionSummaries;
    }
Gets the list of version summaries describing the versions stored in
the associated S3 bucket. Callers should remember that listings for large
buckets can be truncated for performance reasons, so callers might need
to make additional calls to
{@link AmazonS3#listVersions(ListVersionsRequest)} to get additional
results. Callers should always check {@link VersionListing#isTruncated()} to
determine if a listing is truncated or not.

@return A list of the version summaries describing the versions stored in
        the associated S3 bucket.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/VersionListing.java