if (toInterval != null) {
toIntervals.add(toInterval);
} else {
anyFailed = true;
LOG.warn("Liftover failed for ", fromInterval, "(len ", fromInterval.length(), ")");
final List<LiftOver.PartialLiftover> partials = liftOver.diagnosticLiftover(fromInterval);
for (final LiftOver.PartialLiftover partial : partials) {
LOG.info(partial);
}
}
}