// SPDX-License-Identifier: MIT pragma solidity 0.8.19; import "../interfaces/IPropelCore.sol"; /** @title Propel System Start Time @dev Provides a unified `startTime` and `getWeek`, used for emissions. */ contract SystemStart { uint256 public immutable startTime; constructor(IPropelCore PropelCore) { startTime = PropelCore.startTime(); } }