code: def convert_identity(obj, store=None):
      # coerces pandas nullable dtypes; does nothing if obj is not pandas
      obj = _coerce_df_dtypes(obj)
      return obj
  
file_path: sktime/sktime/datatypes/_series/_convert.py
imports: import numpy
  import pandas
  from sktime.datatypes._convert_utils._coerce import _coerce_df_dtypes
  from sktime.datatypes._convert_utils._convert import _extend_conversions
  from sktime.datatypes._registry import MTYPE_LIST_SERIES
  from sktime.utils.validation._dependencies import _check_soft_dependencies
label_desc: Use image node_id 1 for calling a global function with example usage: convert_identity(obj, store) and returns: obj