private void AddIndex(string name, string description, string dbName, bool isUnique, bool isValidOnTable, bool isValidOnTempTable, DataSet <ModelMapper.IndexEntry> entries)
{
var document = ModelMapper.AddIndex(name, description, dbName, isUnique, isValidOnTable, isValidOnTempTable, entries);
TryApplyChanges(document);
NavigatableMarker = ModelMapper.CreateNavigatableMarker(ModelMapper.NodeKind.Index, ModelMapper.ModelType, name);
}