code: def testRaisesKeyError(self):
      accessor = slice_accessor.SliceAccessor({})
      with self.assertRaises(KeyError):
          accessor.get("no_such_key")
  
file_path: model-analysis/tensorflow_model_analysis/slicer/slice_accessor_test.py
imports: from absl.testing import parameterized
  import numpy
  import pyarrow
  import tensorflow
  from tensorflow_model_analysis.api import types
  from tensorflow_model_analysis.eval_saved_model import encoding
  from tensorflow_model_analysis.slicer import slice_accessor
label_desc: Use image node_id 1 for calling the SliceAccessorTest obj's underlying member method code with example usage: obj.testRaisesKeyError() without return types