code: def _check_input(self, X):
      if self.check_input:
          sklearn.utils.check_array(X, dtype=[str, np.number])
  
imports: from __future__ import annotations
  import collections
  import altair
  import numpy
  import pandas
  import sklearn.utils
  from prince import pca, utils
label_desc: Use image node_id 2 for calling the MFA obj's underlying member method code with example usage: obj._check_input(X) without return types