Classic asset code (for Classic / SAC entries; null for Soroban).
Number of pools touching this token in the current snapshot.
Canonical token id. C… for Soroban contracts; CODE:GISSUER…
for Classic; XLM for native.
Soroban Asset Contract peer for Classic assets (null otherwise).
Resolved token entry returned by the quote server's tokens endpoint. Mirrors the indexer's
TokenEntryJSON exactly.