  function depositWithPermit(
    uint256 _assets,
    address _receiver,
    uint256 _deadline,
    uint8 _v,
    bytes32 _r,
    bytes32 _s
  ) external returns (uint256) {
    _permit(IERC20Permit(asset()), msg.sender, address(this), _assets, _deadline, _v, _r, _s);
    return deposit(_assets, _receiver);
  }
  function _permit(
    IERC20Permit _asset,
    address _owner,
    address _spender,
    uint256 _assets,
    uint256 _deadline,
    uint8 _v,
    bytes32 _r,
    bytes32 _s
  ) internal {
    _asset.permit(_owner, _spender, _assets, _deadline, _v, _r, _s);
  }
  function depositWithPermit(
    uint256 _assets,
    address _receiver,
    uint256 _deadline,
    uint8 _v,
    bytes32 _r,
    bytes32 _s
  ) external returns (uint256) {
    _permit(IERC20Permit(asset()), _receiver, address(this), _assets, _deadline, _v, _r, _s);
    return deposit(_assets, _receiver);
  }
