class_docstr: Contains all supported DP metrics.
code: def PERCENTILE(cls, percentile_to_compute: float):
      return Metric("PERCENTILE", percentile_to_compute)
  
imports: import logging
  import math
  from dataclasses import dataclass
  from enum import Enum
  from typing import Any, Sequence, Callable, Optional, List
  import numpy
  from pipeline_dp import input_validators
label_desc: Use image node_id 1 for calling the Metrics obj's underlying member method code with example usage: obj.PERCENTILE(cls, percentile_to_compute) and returns: Metric