code: def runTest(self):
      image_assembler = (
          ImageAssembler()
          .setInputCol("image")
          .setOutputCol("image_assembler")
      )
      assembled = image_assembler.transform(self.data)
      assembled.select("image_assembler.result").show()
      assembled.select("image_assembler.origin").show()
      assembled.select("image_assembler.metadata").show()
  
file_path: spark-nlp/python/test/annotator/image_assembler_test.py
imports: import unittest
  import pytest
  import os
  from sparknlp.base import *
  from test.util import SparkSessionForTest
label_desc: Use image node_id 2 for calling the ImageAssemblerTestSpec obj's underlying member method code with example usage: obj.runTest() without return types