code: def _find_first_explanation(self, key):
      interface = ExplanationDashboardInterface
      explanation_type_key = interface.MLI_EXPLANATION_TYPE_KEY
      new_array = [
          explanation
          for explanation in self._mli_explanations
          if explanation[explanation_type_key] == key
      ]
      if len(new_array) > 0:
          return new_array[0]["value"]
      return None
  
imports: import traceback
  import numpy
  import pandas
  from erroranalysis._internal.constants import Metrics, display_name_to_metric, metric_to_display_name
  from erroranalysis._internal.error_analyzer import ModelAnalyzer, PredictionsAnalyzer
  from erroranalysis._internal.utils import is_spark
  from raiutils.data_processing import convert_to_list, serialize_json_safe
  from raiutils.models import is_classifier
  from responsibleai._interfaces import ErrorAnalysisData
  from .constants import ModelTask
  from .error_analysis_constants import ErrorAnalysisDashboardInterface, MethodConstants
  from .error_handling import _format_exception
  from .explanation_constants import ExplanationDashboardInterface, WidgetRequestResponseConstants
label_desc: Use image node_id 14 for calling the ErrorAnalysisDashboardInput obj's underlying member method code with example usage: obj._find_first_explanation(key) and returns: None, new_array