class_docstr: Micro-cluster class.
code: def inverse_error(x):
      z = math.sqrt(math.pi) * x
      res = x / 2
      z2 = z * z
  
      zprod = z2 * z
      res += (1.0 / 24) * zprod
  
      zprod *= z2  # z5
      res += (7.0 / 960) * zprod
  
      zprod *= z2  # z ^ 7
      res += (127 * zprod) / 80640
  
      zprod *= z2  # z ^ 9
      res += (4369 * zprod) / 11612160
  
      zprod *= z2  # z ^ 11
      res += (34807 * zprod) / 364953600
  
      zprod *= z2  # z ^ 13
      res += (20036983 * zprod) / 797058662400
  
      return res
  
imports: from __future__ import annotations
  import math
  from collections import defaultdict
  from river import base, cluster, stats, utils
label_desc: Use image node_id 9 for calling the CluStreamMicroCluster obj's underlying member method code with example usage: obj.inverse_error(x) and returns: res