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I was digging into this OZ smart contract:

https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/Context.sol

As you may see, it has only two functions to deal with metatxs. I can't figure out why this contract is defined as abstract, as both functions are implemented. Thanks in advance to all of you!

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You can't create an instance of an abstract contract (with something like Context a = new Context();). So it's probably defined as abstract so it can't be deployed on its own - it has to be inherited. Deploying just the Context contract wouldn't make much sense anyway.

Wherever it's in use, it's part of an inheritance.

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