class_docstr: Typed property (descriptor) object so that the value attribute of
  Parameter objects fetches _layered_get_value and _layered_set_value methods
class_docstr_tok: ["Typed","property","(","descriptor",")","object","so","that","the","value","attribute","of","Parameter","objects","fetches","_layered_get_value","and","_layered_set_value","methods"]
code: def __delete__(self, obj: Layered) -> None:
      for layer in obj._layers:
          layer._layered_del_value()
  
imports: import uuid
  import copy
  import bisect
  from enum import Enum
  import numpy
  from nevergrad.common import errors
  import nevergrad.common.typing
label_desc: Use image node_id 4 for calling the ValueProperty obj's underlying member method code with example usage: obj.__delete__(obj) without return types