How to turn off the ESP32+TEA5767 Radio?

Configuration Voice Assistant
1

hi all.
the ESP32+TEA5767 fm radio simple and works well, seems can’t turned the radio off, unless power off?

#include <Wire.h>
#include <TEA5767Radio.h>

TEA5767Radio radio = TEA5767Radio();

void setup()
{ 
  Serial.begin(115200);
  Wire.begin();
  radio.setFrequency(99.1); // pick your own frequency
}

void loop()
{
}