class_docstr: contextmanager to read a chunck of a file line by line.
class_docstr_tok: ["contextmanager","to","read","a","chunck","of","a","file","line","by","line","."]
code: def __exit__(self, exc_type, exc_val, exc_tb) -> None:
      self.fd.close()
  
file_path: fairseq/fairseq/file_chunker_utils.py
imports: import os
  import typing
label_desc: Use image node_id 3 for calling the Chunker obj's underlying member method code with example usage: obj.__exit__(exc_type, exc_val, exc_tb) without return types