const sqlite3_io_methods_layout: {
  members: {
    iVersion: {
      offset: 0;
      signature: "i";
    };
    xCheckReservedLock: {
      offset: 36;
      signature: "i(pp)";
    };
    xClose: {
      offset: 4;
      signature: "i(p)";
    };
    xDeviceCharacteristics: {
      offset: 48;
      signature: "i(p)";
    };
    xFetch: {
      offset: 68;
      signature: "i(pjip)";
    };
    xFileControl: {
      offset: 40;
      signature: "i(pip)";
    };
    xFileSize: {
      offset: 24;
      signature: "i(pp)";
    };
    xLock: {
      offset: 28;
      signature: "i(pi)";
    };
    xRead: {
      offset: 8;
      signature: "i(ppij)";
    };
    xSectorSize: {
      offset: 44;
      signature: "i(p)";
    };
    xShmBarrier: {
      offset: 60;
      signature: "v(p)";
    };
    xShmLock: {
      offset: 56;
      signature: "i(piii)";
    };
    xShmMap: {
      offset: 52;
      signature: "i(piiip)";
    };
    xShmUnmap: {
      offset: 64;
      signature: "i(pi)";
    };
    xSync: {
      offset: 20;
      signature: "i(pi)";
    };
    xTruncate: {
      offset: 16;
      signature: "i(pj)";
    };
    xUnfetch: {
      offset: 72;
      signature: "i(pjp)";
    };
    xUnlock: {
      offset: 32;
      signature: "i(pi)";
    };
    xWrite: {
      offset: 12;
      signature: "i(ppij)";
    };
  };
  sizeof: 76;
};