public ListObjectsV2Request withStartAfter(String startAfter) {
        setStartAfter(startAfter);
        return this;
    }
Sets the optional parameter indicating where you want Amazon S3 to start the object
listing from.  This can be any key in the bucket.

@param startAfter
               The optional startAfter parameter.  This can be any key in the bucket.

@return This {@link ListObjectsV2Request}, enabling additional method
        calls to be chained together.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/ListObjectsV2Request.java