class_docstr: An immutable, lazily-evaluated dict.
  
  Args:
      **kwargs (dict[Callable]): Initial lazy key-value pairs.
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docstr: See :meth:`object.__setitem__`.
  
  Args:
      key (Hashable): Key associated with value.
      value (Callable): Function which returns the lazy value associated
          with key.
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code: def __setitem__(self, key, value):
      """See :meth:`object.__setitem__`.
  
      Args:
          key (Hashable): Key associated with value.
          value (Callable): Function which returns the lazy value associated
              with key.
  
      """
      self.set(key, value)
  
label_desc: Use image node_id 3 for calling the LazyDict obj's underlying member method code with example usage: obj.__setitem__(key, value) without return types