public void addLocalData(
      final WorldStateProofProvider worldStateProofProvider,
      final NavigableMap<Bytes32, Bytes> accounts,
      final ArrayDeque<Bytes> proofs) {
    if (!accounts.isEmpty() && !proofs.isEmpty()) {
      // very proof in order to check if the local flat database is valid or not
      isProofValid =
          worldStateProofProvider.isValidRangeProof(
              startKeyHash, endKeyHash, getRootHash(), proofs, accounts);
      this.existingAccounts = accounts;
    }
  }
The AccountFlatDatabaseHealingRangeRequest class represents a request to heal a range of account
in the flat databases. It encapsulates the necessary information to identify the range and
initiate the healing process.
ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/sync/snapsync/request/heal/AccountFlatDatabaseHealingRangeRequest.java