The multi-index container holding every mempool entry.
Declared in <txmempool.h>
[[guarded_by(0x7ff37b41ef48), guarded_by(0x7ff376fd68f8), guarded_by(0x7ff38def5b18), guarded_by(0x7ff3640f6b28), guarded_by(0x7ff3920f6e18), guarded_by(0x7ff37f5c8f38), guarded_by(0x7ff37d0101b8), guarded_by(0x7ff374c139c8)]]
indexed_transaction_set mapTx;