Sausage ABI. Is the input function or bytes24?

sausage-abi.json

[
    {
      "inputs": [
        {
          "internalType": "function (function (function (function (function (function (function (function (function (function (function (function (function (function (function (function () pure external) pure external) pure external) pure external) pure external) pure external) pure external) pure external) pure external) pure external) pure external) pure external) pure external) pure external) pure external) pure external",
          "name": "",
          "type": "function"
        }
      ],
      "name": "testxxx",
      "outputs": [],
      "stateMutability": "pure",
      "type": "function"
    }
  ]

Sausage.sol

// SPDX-License-Identifier: Unlicensed

pragma solidity 0.8.18;

contract Sausage {
  function testxxx(
        function(
            function(
                function(
                    function(
                        function(
                            function(
                                function(
                                    function(
                                        function(
                                            function(
                                                function(
                                                    function(
                                                        function(
                                                            function(
                                                                function(
                                                                    function() external pure
                                                                ) external pure
                                                            ) external pure
                                                        ) external pure
                                                    ) external pure
                                                ) external pure
                                            ) external pure
                                        ) external pure
                                    ) external pure
                                ) external pure
                            ) external pure
                        ) external pure
                    ) external pure
                ) external pure
            ) external pure
        ) external pure
    ) external pure {}
}