code: def at_defaults(request):
      """
      Default config for explainers. Because it is scoped
      at module level, the state of this  fixture should not be
      mutated during test - if you need to do so, please copy the
      objects returned.
      """
  
      desired_confidence = request.param
  
      return {
          "delta": 0.1,
          "epsilon": 0.15,
          "batch_size": 100,
          "desired_confidence": desired_confidence,
          "max_anchor_size": None,
          "coverage_samples": 9999,
          "n_covered_ex": 5,
          "seed": 0,
      }
  
imports: import pytest
  import logging
  import shap
  import spacy
  import numpy
  from sklearn.linear_model import LogisticRegression, LinearRegression
  from sklearn.ensemble import RandomForestClassifier, RandomForestRegressor
  from alibi.explainers import ALE
  from alibi.explainers import AnchorTabular
  from alibi.explainers import KernelShap, TreeShap
  from alibi.explainers.tests.utils import predict_fcn, MockTreeExplainer
  from alibi.tests.utils import MockPredictor
  from alibi.utils.lang_model import BertBaseUncased, DistilbertBaseUncased, RobertaBase
  from alibi.utils.download import spacy_model
  import tensorflow
  import alibi_testing
  from alibi_testing.data import get_adult_data, get_iris_data, get_diabetes_data, get_mnist_data, get_movie_sentiment_data
label_desc: Use image node_id 11 for calling a global function with example usage: at_defaults(request) and returns: dict