class_docstr: The :class:`CallbackList` class is a wrapper for a list of callbacks which acts as a single :class:`.Callback` and
  internally calls each :class:`.Callback` in the given list in turn.
  
  Args:
      callback_list (list): The list of callbacks to be wrapped. If the list contains a :class:`CallbackList`, this
          will be unwrapped.
class_docstr_tok: ["The",":","class",":","`","CallbackList","`","class","is","a","wrapper","for","a","list","of","callbacks","which","acts","as","a","single",":","class",":","`",".Callback","`","and","internally","calls","each",":","class",":","`",".Callback","`","in","the","given","list","in","turn",".","Args",":","callback_list","(","list",")",":","The","list","of","callbacks","to","be","wrapped",".","If","the","list","contains","a",":","class",":","`","CallbackList","`",",","this","will","be","unwrapped","."]
code: def copy(self):
      return self.__copy__()
  
imports: from torchbearer import Callback
label_desc: Use image node_id 8 for calling the CallbackList obj's underlying member method code with example usage: obj.copy() and returns: self