// If the mapping generates the same mapped features that already exist, we do nothing
if (!newTreeId.equals(oldTreeId)) {
command(AddOp.class).call();
command(CommitOp.class).setMessage(message).call();
command(WriteOSMMappingEntries.class).setMapping(mapping)
.setMappingLogEntry(new OSMMappingLogEntry(oldTreeId, newTreeId)).call();
}
}
return workingTree().getTree();