class_docstr: Base class used to filter attributes based on their expected class.
code: def __setitem__(self, key, value):
      self.attributes[key] = value
  
imports: from collections.abc import MutableMapping
  from numbers import Integral
  from hls4ml.model.types import NamedType, Source, TensorVariable, WeightVariable
  from hls4ml.utils.string_utils import convert_to_pascal_case
label_desc: Use image node_id 5 for calling the AttributeMapping obj's underlying member method code with example usage: obj.__setitem__(key, value) without return types