swapExactTokenForTokens method 
    
    
    
  Implementation
  Future<String> swapExactTokenForTokens({
  required BigInt amountIn,
  required BigInt amountOutMin,
  required List<String> path,
  required String to,
  required BigInt deadline,
  required Uint8List privateKey,
  required String sender,
}) async {
  final function = abi.getFunction("swapExactTokensForTokens")!;
  final result = await interact(
    privateKey: privateKey,
    sender: sender,
    function: function.addValues(values: [amountIn, amountOutMin, path, to, deadline]),
  );
  return result;
}