code: def test_multiple_queries(self):
      self.assertEqual(
          str(
              NQLQueryAggregate(
                  items=[
                      NQLQueryAggregate(
                          items=[
                              NQLQueryAttribute(
                                  name="sys/owner",
                                  type=NQLAttributeType.STRING,
                                  operator=NQLAttributeOperator.EQUALS,
                                  value=user,
                              )
                              for user in ["user1", "user2"]
                          ],
                          aggregator=NQLAggregator.OR,
                      ),
                      NQLQueryAggregate(
                          items=[
                              NQLQueryAttribute(
                                  name="sys/tags",
                                  type=NQLAttributeType.STRING_SET,
                                  operator=NQLAttributeOperator.CONTAINS,
                                  value=tag,
                              )
                              for tag in ["tag1", "tag2"]
                          ],
                          aggregator=NQLAggregator.OR,
                      ),
                  ],
                  aggregator=NQLAggregator.AND,
              )
          ),
          '(((`sys/owner`:string = "user1") OR (`sys/owner`:string = "user2")) AND '
          '((`sys/tags`:stringSet CONTAINS "tag1") OR (`sys/tags`:stringSet CONTAINS "tag2")))',
      )
  
imports: import unittest
  from neptune.internal.backends.nql import NQLAggregator, NQLAttributeOperator, NQLAttributeType, NQLQueryAggregate, NQLQueryAttribute
label_desc: Use image node_id 3 for calling the TestNQL obj's underlying member method code with example usage: obj.test_multiple_queries() without return types