code: def export_batch_from_json(self, json_path, num_batch, c_array_ptr):
      rs_error = (
          self.dll.arrow_rs_cdata_integration_export_batch_from_json(
              str(json_path).encode(),
              num_batch,
              self._pointer_to_int(c_array_ptr),
          )
      )
      self._check_rust_error(rs_error)
  
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 2 for calling the RustCDataExporter obj's underlying member method code with example usage: obj.export_batch_from_json(json_path, num_batch, c_array_ptr) without return types