IYieldOraclelizable.sol

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.7.6;
pragma abicoder v2;

interface IYieldOraclelizable {
    // returns cumulatives and accumulates/updates internal state
    // oracle should call this when updating
    function cumulatives()
      external
    returns(uint256 cumulativeYield);

}