transactionId = model.getDocument().fireMultipleTransaction(0,true);
List changedParents=internalIndent(nodes,deltaLevel,actionType);
if (doTransaction)
model.getDocument().fireMultipleTransaction(transactionId,false);
if (model.getUndoableEditSupport()!=null&isUndo(actionType)&&changedParents!=null&&changedParents.size()>0){
model.getUndoableEditSupport().postEdit(new NodeIndentEdit(model,changedParents,deltaLevel));
}
}