// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "../MerkleTreeWithHistory.sol"; contract MerkleTreeWithHistoryMock is MerkleTreeWithHistory { constructor(uint32 _levels, address _hasher) MerkleTreeWithHistory(_levels, _hasher) {} function insert(bytes32 _leaf1, bytes32 _leaf2) public returns (uint32 index) { return _insert(_leaf1, _leaf2); } }