Manual on data-testing program applied on Qt based applications

Literally:
[This stuff can be useful...]
When you need to call Qt methods from your test script.
For example:
1. when information is not a property
2. when a child is not available through the parent/child hierarchy
3. when the property is an object (say, a model)

How I read it:
[This stuff can be useful...]
When you need to call up all your cute acts from your practiced folder to appease someone.
For example:
1. when you've looked up every book on terrorism, suicide bombing and Islam in the library and men in black come knocking
2. when someone else's kid runs yelling around the train and you're not allowed to kick their ass (but did anyway)
3. when you want to impress someone on the payroll of Hugh Heffner or the likes