In-memory counter incremented every time a transaction is added to or removed from the mempool, used for external mempool tracking.
Declared in <txmempool.h>
[[guarded_by(0x7fb95f554c58), guarded_by(0x7fb968bc6368), guarded_by(0x7fb95fdd01a8), guarded_by(0x7fb978b75568), guarded_by(0x7fb96b8faac8), guarded_by(0x7fb96e5c1598), guarded_by(0x7fb97a07b5c8), guarded_by(0x7fb96be43318)]]
mutable
uint64_t m_sequence_number = {1};