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Remove outdated notes to v2.x docs

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Nicolás Venturo
2020-04-20 20:37:20 -03:00
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contracts/GSN/README.adoc
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= Gas Station Network (GSN) = Gas Station Network (GSN)
_Available since v2.4.0._
This set of contracts provide all the tools required to make a contract callable via the https://gsn.openzeppelin.com[Gas Station Network]. This set of contracts provide all the tools required to make a contract callable via the https://gsn.openzeppelin.com[Gas Station Network].
TIP: If you're new to the GSN, head over to our xref:learn::sending-gasless-transactions.adoc[overview of the system] and basic guide to xref:ROOT:gsn.adoc[creating a GSN-capable contract]. TIP: If you're new to the GSN, head over to our xref:learn::sending-gasless-transactions.adoc[overview of the system] and basic guide to xref:ROOT:gsn.adoc[creating a GSN-capable contract].

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docs/modules/ROOT/pages/gsn-strategies.adoc
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@ -143,7 +143,7 @@ Not all GSN strategies use `_preRelayedCall` and `_postRelayedCall` (though they
`_preRelayedCall` should take the maximum possible charge, with `_postRelayedCall` refunding any difference from the actual charge once the relayed call has been made. `_preRelayedCall` should take the maximum possible charge, with `_postRelayedCall` refunding any difference from the actual charge once the relayed call has been made.
When returning `_approveRelayedCall` to approve the relayed call, the end users address, `maxPossibleCharge`, `transactionFee` and `gasPrice` data can also be returned so that the data can be used in `_preRelayedCall` and `_postRelayedCall`. When returning `_approveRelayedCall` to approve the relayed call, the end users address, `maxPossibleCharge`, `transactionFee` and `gasPrice` data can also be returned so that the data can be used in `_preRelayedCall` and `_postRelayedCall`.
See https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v2.4.0/contracts/GSN/GSNRecipientERC20Fee.sol[the code for `GSNRecipientERC20Fee`] as an example implementation. See https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.0.0/contracts/GSN/GSNRecipientERC20Fee.sol[the code for `GSNRecipientERC20Fee`] as an example implementation.
Once your strategy is ready, all your GSN recipient needs to do is inherit from it: Once your strategy is ready, all your GSN recipient needs to do is inherit from it: