staticGet is a static function
staticGet is a static function

We always call staticGet statically, so we define it statically. Next
step is to remove a bunch of definitions of 'staticGet' from classes
that can instead fall back to a parent class in Managed_DataObject.

The ampersand is removed as we're returning a class anyway, which does
not need a reference (and when we return false, it means nothing).

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