input: Write a python function to record audio from the microphone and convert it to text using Google's speech recognition API.
  assert record_audio_to_text() is not None  # Ensure that the function returns a non-None value
  assert isinstance(record_audio_to_text(), str)  # Ensure that the function returns a string
output: def record_audio_to_text():
      import speech_recognition as sr
      
      recognizer = sr.Recognizer()
      
      with sr.Microphone() as source:
          print("Please say something:")
          audio = recognizer.listen(source)
      
      try:
          text = recognizer.recognize_google(audio)
          return text
      except sr.UnknownValueError:
          return "Google Speech Recognition could not understand audio"
      except sr.RequestError as e:
          return f"Could not request results from Google Speech Recognition service; {e}"