[Qt-interest] QAIM::headerData() is not tied to QModelIndex?

[Kishore]

Why does the headerData() take section parameter and not a QModelIndex?

I know this is not how QAbstractItemModel is commonly used but QAIM is designed in such a way that every modelindex can again have children and so on... ie. there can be 
a table within a table. So essentially, in a tree like structure, a child can have more columns than a parent and with a really different set of headerData as well. A more 
relevant API would be something like:

QAIM::headerData ( const QModelIndex &index, Qt::Orientation orientation, int role = Qt::DisplayRole ) const

just the way it is currently with columnCount().

This seems relevant to me currently because I am using an AggregatingModel that aggregates multiple models. The problem is that with such a model it is irrelevant to have 
a headerData() unless it was in someway tied to the index (and in turn the actual model that it refers to).
-- 
Cheers!
Kishore