Set<GroupingDefinition> _groupings = listSchemaNode.getGroupings(); boolean _isNullOrEmpty_2 = IterableExtensions.isNullOrEmpty(_groupings); boolean _not_2 = (!_isNullOrEmpty_2); if (_not_2) { _builder.append(" "); Set<GroupingDefinition> _groupings_1 = listSchemaNode.getGroupings(); CharSequence _writeGroupingDefs = YangTemplate.writeGroupingDefs(_groupings_1); _builder.append(_writeGroupingDefs, " ");