code: def test_map(self):
      offsets = [0, None, 2, 6]
      pykeys = [b"a", b"b", b"c", b"d", b"e", b"f"]
      pyitems = [1, 2, 3, None, 4, 5]
      keys = pa.array(pykeys, type="binary")
      items = pa.array(pyitems, type="i4")
      self.round_trip_array(
          lambda: pa.MapArray.from_arrays(offsets, keys, items)
      )
  
imports: import decimal
  import gc
  import os
  import sys
  import unittest
  import xml.etree.ElementTree
  import jpype
  import pyarrow
  import pyarrow.ipc
  from pyarrow.cffi import ffi
label_desc: Use image node_id 15 for calling the TestPythonIntegration obj's underlying member method code with example usage: obj.test_map() without return types