class_docstr: Computes example count.
class_docstr_tok: ["Computes","example","count","."]
code: def create_accumulator(self) -> float:
      return 0.0
  
file_path: model-analysis/tensorflow_model_analysis/metrics/example_count.py
imports: from typing import Optional, Dict, Iterable, List
  import apache_beam
  import numpy
  from tensorflow_model_analysis import constants
  from tensorflow_model_analysis.metrics import metric_types
  from tensorflow_model_analysis.utils import util
label_desc: Use image node_id 2 for calling the _ExampleCountCombiner obj's underlying member method code with example usage: obj.create_accumulator() and returns: int