Javadoc
Check that the parameter instance is of a class that is authorized for
JDOPermission("setStateManager"). This method is called by the
replaceStateManager method in persistence-capable classes.
A class that is passed as the parameter to replaceStateManager must be
authorized for JDOPermission("setStateManager"). To improve performance,
first the set of authorized classes is checked, and if not present, a
regular permission check is made. The regular permission check requires
that all callers on the stack, including the persistence-capable class
itself, must be authorized for JDOPermission("setStateManager").