buildFinalFormTree(FormInterface $form, FormView $view)
Assembles the data collected about the given form and its children as a tree-like data structure. The result can be queried using {@link getData()}. Contrary to {@link buildPreliminaryFormTree()}, a {@link FormView} object has to be passed. The tree structure of this view object will be used for structuring the resulting data. That means, if a child is present in the view, but not in the form, it will be present in the final dat