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//SPDX-License-Identifier: MIT
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pragma solidity 0.8.0;
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contract Migrations {
address public owner;
uint public lastCompletedMigration;
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constructor() {
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owner = msg.sender;
}
modifier restricted() {
if (msg.sender == owner) _;
}
function setCompleted(uint completed) public restricted {
lastCompletedMigration = completed;
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}
function upgrade(address newAddress) public restricted {
Migrations upgraded = Migrations(newAddress);
upgraded.setCompleted(lastCompletedMigration);
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}
}