成员的完整列表，这些成员属于 apollo::cyber::transport::ArenaSegmentState,包括所有继承而来的类成员

auto_extended_	apollo::cyber::transport::ArenaSegmentState
block_num_	apollo::cyber::transport::ArenaSegmentState
bytes_	apollo::cyber::transport::ArenaSegmentState
message_seq_	apollo::cyber::transport::ArenaSegmentState
message_size_	apollo::cyber::transport::ArenaSegmentState
mutex_	apollo::cyber::transport::ArenaSegmentState
ref_count_	apollo::cyber::transport::ArenaSegmentState
struct_	apollo::cyber::transport::ArenaSegmentState