code: def convert_to_link(val):
      if isinstance(val, Link):
          return val
      if val == "identity":
          return IdentityLink()
      if val == "logit":
          return LogitLink()
      raise TypeError(
          "Passed link object must be a subclass of iml.Link"
      )
  
imports: import copy
  import numpy
  import pandas
  import scipy.sparse
  from sklearn.cluster import KMeans
  from sklearn.impute import SimpleImputer
label_desc: Use image node_id 8 for calling a global function with example usage: convert_to_link(val) and returns: val, IdentityLink, LogitLink