return string(buf[0 : n-1]), nil
}

func Getgroups() (gids []int, err error) {
	n, err := getgroups(0, nil)
	if err != nil {
		return nil, err
	}
	if n == 0 {
		return nil, nil
	}

	// Sanity check group count.  Max is 1<<16 on Linux.
	if n < 0 || n > 1<<20 {
		return nil, EINVAL
	}

	a := make([]_Gid_t, n)
	n, err = getgroups(n, &a[0])
	if err != nil {
		return nil, err

//go:cgo_import_dynamic libc_unlinkat unlinkat "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_getcwd getcwd "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_getgroups getgroups "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_setgroups setgroups "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_getdirent getdirent "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_wait4 wait4 "libc.a/shr_64.o"

func getgroups(ngid int, gid *_Gid_t) (n int, err error) {
	r0, _, e1 := rawSyscall(abi.FuncPCABI0(libc_getgroups_trampoline), uintptr(ngid), uintptr(unsafe.Pointer(gid)), 0)
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_getgroups_trampoline()

//go:cgo_import_dynamic libc_getgroups getgroups "libc.so"

func getgroups(ngid int, gid *_Gid_t) (n int, err error) {
	r0, _, e1 := rawSyscall(abi.FuncPCABI0(libc_getgroups_trampoline), uintptr(ngid), uintptr(unsafe.Pointer(gid)), 0)
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_getgroups_trampoline()

//go:cgo_import_dynamic libc_getgroups getgroups "libc.so"

func getgroups(ngid int, gid *_Gid_t) (n int, err error) {
	r0, _, e1 := rawSyscall(abi.FuncPCABI0(libc_getgroups_trampoline), uintptr(ngid), uintptr(unsafe.Pointer(gid)), 0)
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_getgroups_trampoline()

//go:cgo_import_dynamic libc_getgroups getgroups "libc.so"

func getgroups(ngid int, gid *_Gid_t) (n int, err error) {
	r0, _, e1 := rawSyscall(abi.FuncPCABI0(libc_getgroups_trampoline), uintptr(ngid), uintptr(unsafe.Pointer(gid)), 0)
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_getgroups_trampoline()

//go:cgo_import_dynamic libc_getgroups getgroups "libc.so"

func getgroups(ngid int, gid *_Gid_t) (n int, err error) {
	r0, _, e1 := rawSyscall(abi.FuncPCABI0(libc_getgroups_trampoline), uintptr(ngid), uintptr(unsafe.Pointer(gid)), 0)
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_getgroups_trampoline()

//go:cgo_import_dynamic libc_getgroups getgroups "libc.so"

func getgroups(ngid int, gid *_Gid_t) (n int, err error) {
	r0, _, e1 := syscall_rawSyscall(libc_getgroups_trampoline_addr, uintptr(ngid), uintptr(unsafe.Pointer(gid)), 0)
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

var libc_getgroups_trampoline_addr uintptr

//go:cgo_import_dynamic libc_getgroups getgroups "libc.so"

func getgroups(ngid int, gid *_Gid_t) (n int, err error) {
	r0, _, e1 := syscall_rawSyscall(libc_getgroups_trampoline_addr, uintptr(ngid), uintptr(unsafe.Pointer(gid)), 0)
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

var libc_getgroups_trampoline_addr uintptr

//go:cgo_import_dynamic libc_getgroups getgroups "libc.so"

     */
    @Nullable @Optional @Input
    public Map<String, List<String>> getGroups() {
        return groups.getValue();
    }

    public void setGroups(@Nullable Map<String, List<String>> groups) {
        this.groups.setValue(groups);
    }

    public StandardJavadocDocletOptions group(Map<String, List<String>> groups) {
        setGroups(groups);
        return this;
    }