code: def setUp(self):
      self.spark = SparkSessionForTest.spark
      self.input1 = "This is the first input"
      self.input2 = "This is the second input"
      self.twoInputDataSet = self.spark.createDataFrame(
          [[self.input1, self.input2]]
      ).toDF("input1", "input2")
  
imports: import unittest
  import pytest
  from sparknlp.base import *
  from sparknlp.annotator import *
  from test.util import SparkSessionForTest
label_desc: Use image node_id 1 for calling the MultiDocumentAssemblerTest obj's underlying member method code with example usage: obj.setUp() without return types