code: def export_schema_from_json(self, json_path, c_schema_ptr):
      json_file = self.java_io.File(json_path)
      with self.java_arrow.vector.ipc.JsonFileReader(
          json_file, self.java_allocator
      ) as json_reader:
          schema = json_reader.start()
          dict_provider = json_reader
          self.java_arrow.c.Data.exportSchema(
              self.java_allocator,
              schema,
              dict_provider,
              self._wrap_c_schema_ptr(c_schema_ptr),
          )
  
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 1 for calling the JavaCDataExporter obj's underlying member method code with example usage: obj.export_schema_from_json(json_path, c_schema_ptr) without return types