pragma solidity ^0.5.0; interface ICreditCustodian { event Unlock(address indexed to, uint256 indexed typeID, uint256 value); event Lock( address indexed operator, address indexed from, uint256 indexed typeID, uint256 value, bytes data ); function unlock(uint256 _typeID, uint256 _value) external; function lock(uint256 _typeID, uint256 _value) external; }