code: def keys(self):
      return self.columns
  
file_path: ivy/ivy/functional/frontends/pandas/dataframe.py
imports: from .generic import NDFrame
  import ivy
  from .series import Series
  from ivy.functional.frontends.pandas.index import Index
label_desc: Use image node_id 8 for calling the DataFrame obj's underlying member method code with example usage: obj.keys() and returns: self