class_docstr: QueryStatisticsCombineFn accumulator type.
class_docstr_tok: ["QueryStatisticsCombineFn","accumulator","type","."]
code: def merge(self, other: "_State") -> None:
      self.total_queries += other.total_queries
      self.total_documents += other.total_documents
      self.min_documents = min(self.min_documents, other.min_documents)
      self.max_documents = max(self.max_documents, other.max_documents)
  
file_path: model-analysis/tensorflow_model_analysis/evaluators/query_metrics/query_statistics.py
imports: import dataclasses
  from typing import Any, Dict, Iterable
  import apache_beam
  from tensorflow_model_analysis.evaluators.query_metrics import query_types
  from tensorflow_model_analysis.post_export_metrics import metric_keys
label_desc: Use image node_id 1 for calling the _State obj's underlying member method code with example usage: obj.merge(other) without return types