code: def close(self):
      self.java_allocator.close()
  
imports: import contextlib
  import functools
  import os
  import subprocess
  from .None import cdata
  from .tester import Tester, CDataExporter, CDataImporter
  from .util import run_cmd, log
  from ..utils.source import ARROW_ROOT_DEFAULT
label_desc: Use image node_id 4 for calling the JavaCDataImporter obj's underlying member method code with example usage: obj.close() without return types