docstr: Do data cleaning and return the dataframe.
  
  Returns:
      DataFrameType: The cleaned DataFrame.
docstr_tok: ["Do","data","cleaning","and","return","the","dataframe",".","Returns",":","DataFrameType",":","The","cleaned","DataFrame","."]
code: def clean_data(self) -> DataFrameType:
      """
      Do data cleaning and return the dataframe.
  
      Returns:
          DataFrameType: The cleaned DataFrame.
      """
  
      return self.chat(
          """
  1. Copy the dataframe to a new variable named df_cleaned.
  2. Do data cleaning.
  3. Return df_cleaned.
  """
      )
  
imports: from ..helpers.df_info import DataFrameType
  from typing import Union
  from abc import ABC, abstractmethod
label_desc: Use image node_id 2 for calling the Shortcuts obj's underlying member method code with example usage: obj.clean_data() and returns: self