class_docstr: Parameters
  ----------
  array
class_docstr_tok: ["Parameters","--","--","--","--","--","array"]
code: def __len__(self):
      return len(self.array)
  
imports: import numpy
  from ..base import BaseEstimator, ClassifierMixin
  from ..utils._metadata_requests import RequestMethod
  from .metaestimators import available_if
  from .validation import _check_sample_weight, _num_samples, check_array, check_is_fitted
label_desc: Use image node_id 2 for calling the MockDataFrame obj's underlying member method code with example usage: obj.__len__() and returns: len