class_docstr: Shared set-up, checks and methods across creation transformers.
class_docstr_tok: ["Shared","set-up",",","checks","and","methods","across","creation","transformers","."]
code: def _more_tags(self):
      tags_dict = _return_tags()
      tags_dict["allow_nan"] = True
      tags_dict["variables"] = "skip"
      # Tests that are OK to fail:
      tags_dict["_xfail_checks"][
          "check_parameters_default_constructible"
      ] = "transformer has 1 mandatory parameter"
      tags_dict["_xfail_checks"][
          "check_fit2d_1feature"
      ] = "this transformer works with datasets that contain at least 2 variables. \
          Otherwise, there is nothing to combine"
      return tags_dict
  
file_path: feature_engine/feature_engine/creation/base_creation.py
imports: from typing import List, Optional, Union
  import pandas
  from sklearn.base import BaseEstimator, TransformerMixin
  from sklearn.utils.validation import check_is_fitted
  from feature_engine._base_transformers.mixins import GetFeatureNamesOutMixin
  from feature_engine._check_input_parameters.check_init_input_params import _check_param_drop_original, _check_param_missing_values
  from feature_engine._variable_handling.variable_type_selection import _find_or_check_numerical_variables
  from feature_engine.dataframe_checks import _check_contains_inf, _check_contains_na, _check_X_matches_training_df, check_X
  from feature_engine.tags import _return_tags
label_desc: Use image node_id 4 for calling the BaseCreation obj's underlying member method code with example usage: obj._more_tags() and returns: tags_dict