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This can be used e.g. to track the number of elements in a mapping, issuing ERC721 ids, or counting request ids. Include with `using Counters for Counters.Counter;`", "kind": "dev", "methods": {}, "title": "Counters", "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 } }