code: def handle_query(self):
      self._open()
      header = []
      while True:
          segm = XMLCorpusView.read_block(self, self._stream)
          if len(segm) == 0:
              break
          header.extend(segm)
      self.close()
      return header
  
imports: import functools
  import os
  import re
  import tempfile
  from nltk.corpus.reader.util import concat
  from nltk.corpus.reader.xmldocs import XMLCorpusReader, XMLCorpusView
label_desc: Use image node_id 2 for calling the NKJPCorpus_Header_View obj's underlying member method code with example usage: obj.handle_query() and returns: header