code: def __init__(self, nb_rows, nb_columns, key):
      self.nb_rows = nb_rows
      self.nb_columns = nb_columns
      self.key = key
  
imports: import abc
  import functools
  from collections.abc import Iterable
  import jax
  import jax.numpy
  import numpy
  from absl import logging
  from jax import lax, random
label_desc: Use image node_id 1 to create a new GaussianUnstructuredRandomMatrix object from inherited base classes: RandomMatrix with example: obj = GaussianUnstructuredRandomMatrix(nb_rows, nb_columns, key)