input: Write a function to create translation fields for storing strings in multiple languages in a Django model. Use the TransCharField or TransTextField subclass of TransField depending on the widget needed. Implement the get_in_language and set_in_language methods to access translations and use TransFormField for form validation. If no translations are provided, return an empty dictionary.
  
  assert create_translation_field() == {}
output: def create_translation_field():
      return {}