original_docstring: 
      Convert a value to lowercase.
      
docstring: Convert a value to lowercase.
docstring_tokens: Convert a value to lowercase .
code: def do_lower(s):
      """
      Convert a value to lowercase.
      """
      return s.lower()
code_tokens: def do_lower ( s ) : return s . lower ( )
short_docstring: Convert a value to lowercase.
short_docstring_tokens: Convert a value to lowercase .
comment: """
      Convert a value to lowercase.
      """