code: def _jvm_field(jvm_spec):
      om = jpype.JClass("com.fasterxml.jackson.databind.ObjectMapper")()
      pojo_Field = jpype.JClass(
          "org.apache.arrow.vector.types.pojo.Field"
      )
      return om.readValue(jvm_spec, pojo_Field)
  
file_path: arrow/python/pyarrow/tests/test_jvm.py
imports: import json
  import os
  import pyarrow
  import pyarrow.jvm
  import pytest
  import sys
  import xml.etree.ElementTree
label_desc: Use image node_id 4 for calling a global function with example usage: _jvm_field(jvm_spec) and returns: om