class_docstr: Mainly used for maintaining all ParamAttr in a parl.layers.LayerFunc
      
class_docstr_tok: ["Mainly","used","for","maintaining","all","ParamAttr","in","a","parl.layers.LayerFunc"]
docstr: Args:
      kwargs: {name:attr}
docstr_tok: ["Args",":","kwargs",":","{","name",":","attr","}"]
code: def __init__(self, **kwargs):
      """
      Args:
          kwargs: {name:attr}
      """
      self._attrs_dict = {}
      for k, v in six.iteritems(kwargs):
          self._add_attr(k, v)
  
file_path: PARL/parl/core/fluid/layers/attr_holder.py
imports: import six
  from copy import deepcopy
label_desc: Use image node_id 1 to create a new AttrHolder object from inherited base classes: object with example: obj = AttrHolder()