class_docstr: Accumulator for sum aggregation.
  
  Attributes:
    sum: The sum of the input values.
docstr: Computes and returns the result of aggregation.
  
  Returns:
    Sum of the values.
code: def compute_metrics(self) -> float:
      """Computes and returns the result of aggregation.
  
      Returns:
        Sum of the values.
      """
      return self.sum
  
imports: import abc
  from typing import Any, List, Sequence
  import pipeline_dp
label_desc: Use image node_id 4 for calling the SumAccumulator obj's underlying member method code with example usage: obj.compute_metrics() and returns: self