code: def tail(self):
      return self._tail
  
file_path: metaflow/metaflow/plugins/datatools/s3/s3tail.py
imports: from io import BytesIO
  from .s3util import aws_retry, get_s3_client
label_desc: Use image node_id 5 for calling the S3Tail obj's underlying member method code with example usage: obj.tail() and returns: self