code: def _jvm_schema(jvm_spec, metadata=None):
      field = _jvm_field(jvm_spec)
      schema_cls = jpype.JClass(
          "org.apache.arrow.vector.types.pojo.Schema"
      )
      fields = jpype.JClass("java.util.ArrayList")()
      fields.add(field)
      if metadata:
          dct = jpype.JClass("java.util.HashMap")()
          for k, v in metadata.items():
              dct.put(k, v)
          return schema_cls(fields, dct)
      else:
          return schema_cls(fields)
  
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 5 for calling a global function with example usage: _jvm_schema(jvm_spec, metadata) and returns: schema_cls, schema_cls