public String getVersionIdMarker() {
        return versionIdMarker;
    }
Gets the value of the version ID marker parameter used to request this version
listing. Returns <code>null</code> if no version ID marker was otherwise specified.

@return The version ID marker parameter originally used to request this
        version listing. Returns <code>null</code> if no version ID marker otherwise was specified.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/VersionListing.java