pragma solidity ^0.4.24;

import "zeppelin-solidity/contracts/token/ERC20/ERC20.sol";

contract ERC223 is ERC20 {

    function transfer(address to, uint value, bytes data) public returns (bool ok);

    function transfer(address to, uint value, bytes data, string custom_fallback) public returns (bool ok);

    event Transfer(address indexed from, address indexed to, uint value, bytes data);
}