class_docstr: Represents a count of occurrences of events or objects.
  
  `Counter` can help debug Pipeline computations. For example, by counting
  objects (consumed, produced, etc...) by the Pipeline, or occurrences of
  certain cases in the Pipeline.
docstr: Adds the count of another Counter into this instance.
docstr_tok: ["Adds","the","count","of","another","Counter","into","this","instance","."]
code: def _merge_from(self, other):
      """Adds the count of another Counter into this instance."""
      if not isinstance(other, Counter):
          raise MergeStatisticsError(
              "Cannot merge %s into Counter" % other.__class__.__name__
          )
      self.count += other.count
  
imports: import abc
  import bisect
  import copy
  import tensorflow.compat.v1
label_desc: Use image node_id 3 for calling the Counter obj's underlying member method code with example usage: obj._merge_from(other) without return types