APIv5 txOrigin option and estimateGas issues

[mfw78]

SDK does not provide support for the txOrigin option to be passed in the API for the event whereby a smart contract interacts with the Augustus Swapper, and not an EOA. This is documented in the developer docs (with room for much expansion on documentation), however Swagger also doesn't have a txOrigin option.

1. Is the txOrigin actually required? If not, could all the documentation actually be updated?
2. The gas checking parameters create issues when simulating the transaction, as a smart contract interacting with Paraswap may have no ETH balance, and therefore the simulation fails.

The specific use case that I have is:

1. Keeper EOA that holds ETH. All transacitions originate from this EOA.
2. A smart contract with logic deployed on chain that integrates multiple liquidity sources (including paraswap). This smart contract is the one that calls paraswap, and it has no ETH balance.

So - how do I use Paraswap to achieve the above? I have managed to simulate some transactions however as a forked network for testing diverges from mainnet, it's difficult to know if the transactions that I've simulated correctly have succeeded out of chance, or out of correct logic.