old_contents: from datetime import datetime
  from time import mktime
  
  
  def normalize_registry_name(name):
      name.lower().replace(' ', '_')
  
  
  def decode_datetime(dt_in_millis):
      return datetime.utcfromtimestamp(dt_in_millis / 1000)
  
  
  def encode_datetime(dt):
      return int(mktime(dt.utctimetuple()) * 1000)
  
new_contents: from datetime import datetime
  from time import mktime
  
  
  def decode_datetime(dt_in_millis):
      return datetime.utcfromtimestamp(dt_in_millis / 1000)
  
  
  def encode_datetime(dt):
      return int(mktime(dt.utctimetuple()) * 1000)
  
subject: Remove normalize name.