class_docstr: A line splitter that handles 'streamed content' and is based
  on python's built-in splitlines().
class_docstr_tok: ["A","line","splitter","that","handles","'streamed","content","'","and","is","based","on","python","'s","built-in","splitlines","(",")","."]
code: def finish_processing(self) -> Optional[str]:
      return self.remaining_data
  
file_path: datalad/datalad/runner/utils.py
imports: from __future__ import annotations
  import logging
  from collections import defaultdict
  from typing import Optional
label_desc: Use image node_id 3 for calling the LineSplitter obj's underlying member method code with example usage: obj.finish_processing() and returns: self