code: def internal(identifier, size):
      '''
      Internal provider
  
      Use pydenticon to generate an identicon.
      '''
      identicon = generate_pydenticon(identifier, size)
      response = send_file(io.BytesIO(identicon), mimetype='image/png')
      etag = hashlib.sha1(identicon).hexdigest()
      response.set_etag(etag)
      return responsf internal(identifier, size):
      '''
      Internal provider
  
      Use pydenticon to generate an identicon.
      '''
      identicon = generate_pydenticon(identifier, size)
      response = send_file(io.BytesIO(identicon), mimetype='image/png')
      etag = hashlib.sha1(identicon).hexdigest()
      response.set_etag(etag)
      return response
docs: Internal provider
  
      Use pydenticon to generate an identicon.