// being valid at the next read call. If Peek returns fewer than n bytes, it
// also returns an error explaining why the read is short. The error is
// [ErrBufferFull] if n is larger than b's buffer size.
//
// Calling Peek prevents a [Reader.UnreadByte] or [Reader.UnreadRune] call from succeeding
// until the next read operation.
func (b *Reader) Peek(n int) ([]byte, error) {
	if n < 0 {

	if err := cmd.Run(); err != nil {
		return fmt.Errorf("codesign: %v", err)
	}
	return nil
}

// mountDevImage ensures a developer image is mounted on the device.
// The image contains the device lldb server for idevicedebugserverproxy
// to connect to.
func mountDevImage() error {
	// Check for existing mount.
	cmd := idevCmd(exec.Command("ideviceimagemounter", "-l", "-x"))
	out, err := cmd.CombinedOutput()

pkg crypto/rsa, method (*PrivateKey) Sign(io.Reader, []uint8, crypto.SignerOpts) ([]uint8, error)
pkg crypto/rsa, type PSSOptions struct, Hash crypto.Hash

# CL 157090043 crypto/tls: support TLS_FALLBACK_SCSV as a server., Adam Langley <******@****.***>
pkg crypto/tls, const TLS_FALLBACK_SCSV = 22016
pkg crypto/tls, const TLS_FALLBACK_SCSV uint16