I'm thinking to have a geth "extension" that would be working with a Geth subscriptions. I would like to filter over pending transactions.

When I'm searching in the code I can see that I can create a `PendingTransactionsSubscription (https://github.com/ethereum/go-ethereum/blob/master/eth/filters/filter_system.go#L345) but that returns me only hashes.

I would like to be able to work with transaction object within the subscription. I'm thinking in way I hacked here: https://github.com/ochaloup/go-ethereum/commit/9e4aa4699726ff7a38486d7ba8329cb7e37ff596

Would be possible to pass the types.Transaction object instead of common.Hash for PendingTransactionsSubscription in the oficial Geth release? Is there some best practice how to bind to the subscription and search through the pending transactions to filter them?

Thank you for ideas

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