ClearingHouse(s.clearingHouse[collateralId]).transferUnderlying(
  addr,
  tokenId,
  address(receiver)
);

//trigger the flash action on the receiver
if (
  receiver.onFlashAction(
	IFlashAction.Underlying(s.clearingHouse[collateralId], addr, tokenId),
	data
  ) != keccak256("FlashAction.onFlashAction")
) {
  revert FlashActionCallbackFailed();
}
  function transferUnderlying(
    address tokenContract,
    uint256 tokenId,
    address target
  ) external {
    IAstariaRouter ASTARIA_ROUTER = IAstariaRouter(_getArgAddress(0));
    require(msg.sender == address(ASTARIA_ROUTER.COLLATERAL_TOKEN()));
    ERC721(tokenContract).safeTransferFrom(address(this), target, tokenId);
  }
ERC721(msg.sender).safeTransferFrom(
	address(this),
	s.clearingHouse[collateralId],
	tokenId_
);
function safeTransferFrom(
	address from,
	address to,
	uint256 id,
	uint256 amount,
	bytes memory data
) public virtual override {
