code: def testWriteIgnoresMissingKeys(self):
      with beam.Pipeline() as pipeline:
          test = pipeline | beam.Create(["test"])
          # PTransform is None so this will throw exception if it tries to run
          _ = {"test": test} | writer.Write("key-does-not-exist", None)
  
imports: import apache_beam
  import tensorflow
  from tensorflow_model_analysis.eval_saved_model import testutil
  from tensorflow_model_analysis.writers import writer
label_desc: Use image node_id 1 for calling the WriterTest obj's underlying member method code with example usage: obj.testWriteIgnoresMissingKeys() without return types