hb_mutex_t         84 third_party/harfbuzz-ng/src/hb-object-private.hh   hb_mutex_t lock;
hb_mutex_t         85 third_party/harfbuzz-ng/src/hb-object-private.hh   hb_lockable_set_t<hb_user_data_item_t, hb_mutex_t> items;