public void setKeyMarker(String keyMarker) {
        this.keyMarker = keyMarker;
    }
Sets the optional key marker indicating where in the results to begin
listing.
<p>
Together with the upload ID marker, specifies the multipart upload after
which listing should begin.
<p>
If the upload ID marker is not specified, only the keys lexicographically
greater than the specified key-marker will be included in the list.
<p>
If the upload ID marker is specified, any multipart uploads for a key
equal to the key-marker may also be included, provided those multipart
uploads have upload IDs lexicographically greater than the specified
marker.

@param keyMarker
           The optional key marker indicating where in the results to
           begin listing.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/ListMultipartUploadsRequest.java