code: def test_cauchy() -> None:
      array = mutation.Cauchy()(Array(shape=(2, 4)))
      array.mutate()
  
file_path: nevergrad/nevergrad/parametrization/test_mutation.py
imports: import typing
  import numpy
  from nevergrad.common import testing
  from .None import mutation
  from .data import Array
label_desc: Use image node_id 6 for calling a global function with example usage: test_cauchy() without return types