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interface.sol

// SPDX-License-Identifier: MIT
pragma solidity ^ 0.8.0;

import "github.com/OpenZeppelin/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol";

contract tradeNFT {
  
  IERC721 internal token;

  constructor(address tokenAddress) { 
    token = IERC721(tokenAddress);
  }

  function approve(address to, uint id) external {
    token.approve(to, id);
  }
  
  function transferFrom(address from, address to, uint id) external {
    token.safeTransferFrom(from, to, id);
  }

}