public void setNextKeyMarker(String marker) {
        this.nextKeyMarker = marker;
    }
For internal use only. Sets the key marker to use in the
next listVersions request in order to see the next page of results for a
truncated version listing.

@param marker
           The key marker to use in the next listVersions request in
           order to see the next page of results for a truncated version
           listing.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/VersionListing.java