/** Returns the last build. */
@Exported
@QuickSilver
public RunT getLastBuild() {
SortedMap<Integer, ? extends RunT> runs = _getRuns();
if (runs.isEmpty()) return null;
return runs.get(runs.firstKey());
}
/**
* Gets the latest build #m that satisfies <tt>m<=n</tt>.
*
* <p>This is useful when you'd like to fetch a build but the exact build might be already gone
* (deleted, rotated, etc.)
*/
public final RunT getNearestOldBuild(int n) {
SortedMap<Integer, ? extends RunT> m = _getRuns().tailMap(n);
if (m.isEmpty()) return null;
return m.get(m.firstKey());
}