code: def impute(self, vname):
      # Wrap this in case we later add additional imputation
      # methods.
      self.impute_pmm(vname)
  
imports: import pandas
  import numpy
  import patsy
  from statsmodels.base.model import LikelihoodModelResults
  from statsmodels.regression.linear_model import OLS
  from collections import defaultdict
label_desc: Use image node_id 19 for calling the MICEData obj's underlying member method code with example usage: obj.impute(vname) without return types