* dh.findMatchingBlocks(p1ToBase); // compiles ok!
* </pre>
*/
@SuppressWarnings("unchecked")
public DiffRangeMap fill(DiffHelper<?> dh) {
@SuppressWarnings("rawtypes")
final MatchInspector i = (MatchInspector) this;
dh.findMatchingBlocks(i);
return this;
}