code: def pref(preference, field=None, verbose_name=None, help_text='', static=True, readonly=False):
      
      try:
          bound = bind_proxy(
              (preference,),
              field=field,
              verbose_name=verbose_name,
              help_text=help_text,
              static=static,
              readonly=readonly,
          )
          return bound[0]
  
      except IndexError:
          return
docs: Marks a preference.
  
      :param preference: Preference variable.
  
      :param Field field: Django model field to represent this preference.
  
      :param str|unicode verbose_name: Field verbose name.
  
      :param str|unicode help_text: Field help text.
  
      :param bool static: Leave this preference static (do not store in DB).
  
      :param bool readonly: Make this field read only.
  
      :rtype: PrefProxy|None