-lttng::sessiond::trace::stream_class::stream_class(
- unsigned int in_id, enum header_type in_header_type) :
- id{in_id}, header_type_{in_header_type}
+lttng::sessiond::trace::stream_class::stream_class(unsigned int in_id,
+ enum header_type in_header_type,
+ nonstd::optional<std::string> in_default_clock_class_name) :
+ id{in_id},
+ header_type_{in_header_type},
+ default_clock_class_name{std::move(in_default_clock_class_name)}