code: def explain_func_stub(*args, **kwargs):
      # tf-explain does not support 2D inputs
      input_shape = kwargs.get("inputs").shape
      return np.random.uniform(low=0, high=0.5, size=input_shape)
  
file_path: Quantus/tests/metrics/test_complexity_metrics.py
imports: from typing import Union
  import pytest
  from pytest_lazyfixture import lazy_fixture
  import numpy
  from quantus.functions.explanation_func import explain
  from quantus.helpers.model.model_interface import ModelInterface
  from quantus.metrics.complexity import Complexity, EffectiveComplexity, Sparseness
label_desc: Use image node_id 1 for calling a global function with example usage: explain_func_stub() and returns: np