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"]
code: def __getattr__(self, name):
      if name in self._attrs_dict.keys():
          return self._attrs_dict[name]
      else:
          return None
  
file_path: PARL/parl/core/fluid/layers/attr_holder.py
imports: import six
  from copy import deepcopy
label_desc: Use image node_id 4 for calling the AttrHolder obj's underlying member method code with example usage: obj.__getattr__(name) and returns: self, None