code: def leaderboard(self, X, y, **kwargs) -> pd.DataFrame:
      data = self._combine_X_y(X=X, y=y)
      return self.predictor_.leaderboard(data=data, **kwargs)
  
file_path: autogluon/tabular/src/autogluon/tabular/experimental/_scikit_mixin.py
imports: from __future__ import annotations
  import pandas
  from sklearn.utils.validation import check_array, check_is_fitted
label_desc: Use image node_id 5 for calling the ScikitMixin obj's underlying member method code with example usage: obj.leaderboard(X, y) and returns: self