aave-protocol-v2/contracts/interfaces/IChainlinkAggregator.sol

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// SPDX-License-Identifier: agpl-3.0
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pragma solidity 0.6.12;
interface IChainlinkAggregator {
function latestAnswer() external view returns (int256);
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function latestTimestamp() external view returns (uint256);
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function latestRound() external view returns (uint256);
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function getAnswer(uint256 roundId) external view returns (int256);
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function getTimestamp(uint256 roundId) external view returns (uint256);
event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 timestamp);
event NewRound(uint256 indexed roundId, address indexed startedBy);
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}