Add summary tests for ListWrapperReturnsVoidExample

[onewhl]

Description

I investigated issue 437 and didn't reproduced the error.
To capture the current behavior , I wrote summary tests for ListWrapperReturnsVoidExample class.

Type of Change

• New unit tests

How Has This Been Tested?

I added summary tests for each method in the ListWrapperReturnsVoidExample class.

Automated Testing

Tests are located in examples.collections.SummaryListWrapperReturnsVoidTest

Manual Scenario

You can run UTBot on the ListWrapperReturnsVoidExample class and check the summaries you get with the ones I provide in summary tests.

Checklist (remove irrelevant options):

• The change followed the style guidelines of the UTBot project
• Self-review of the code is passed
• The change contains enough commentaries, particularly in hard-to-understand areas
• New documentation is provided or existed one is altered
• No new warnings
• Tests that prove my change is effective
• All tests pass locally with my changes

[amandelpie]

Please add a KDoc here with the link to the issue related to the newly added test and postpone the merging for a few days