Examples often use Ext.data.JsonStore even though docs say not to
I've noticed many examples (ST 2.1 RC2) that use Ext.data.JsonStore. But it doesn't show up in the help under the data tree on the left. And when I did get to it (via Store's subclasses section), I found a big pink notice: NOTE This is a private utility class for internal use by the framework. Don't rely on its existence.
Should the examples really be using this if we're not supposed to? Isn't it a bad thing to teach?
Some topics with examples that use it:
Ext.chart.axis.Category/Numeric/Time (lots of examples in charts particularly - probably a lot of them just copy/pasted)
In the exampes:
It's also just kind of weird that JsonStore is marked as private but not its siblings ArrayStore, DirectStore, or NodeStore.