code: def seek(self, offset, whence=io.SEEK_SET):
      if not 0 <= whence <= 2:
          raise io.UnsupportedOperation(
              f"unsupported whence value {whence}"
          )
      return self._jfile.seek(offset, whence)
  
imports: import io
  import json
  import time
  from typing import Dict, List, Union, Any
  import dateutil.parser
  from hailtop.fs.fs import FS
  from hailtop.fs.stat_result import FileType, FileListEntry, FileStatus
label_desc: Use image node_id 5 for calling the HadoopReader obj's underlying member method code with example usage: obj.seek(offset, whence) and returns: self