code: def feature_info_sample(self, sample_data):
      feature_info = FeatureInfo(
          feature="feature",
          feature_name="Feature",
          df=sample_data,
          grid_type="percentile",
          num_grid_points=5,
      )
      return feature_info
  
imports: import pandas
  import numpy
  import pytest
  from pdpbox.utils import FeatureInfo, _to_rgba, _check_col, _check_dataset, _make_list, _check_model, _check_classes, _check_memory_limit, _check_frac_to_plot, _calc_n_jobs, _get_string, _expand_params_for_interact, _calc_preds, _check_cluster_params, _check_plot_engine, _check_pdp_interact_plot_type
label_desc: Use image node_id 2 for calling the TestFeatureInfo obj's underlying member method code with example usage: obj.feature_info_sample(sample_data) and returns: feature_info