The AllOpen compiler plugin opens all declarations of the annotated
class, regardless of class type. However, it only opens classes (not
interfaces, objects, enums, etc). This leads to a warning where members
of an annotation are open when annotated. Spring has many such
annotations, as it is common to create meta-annotations from the core
set of AllOpen supported annotations.
^KT-63507
Brian Norman
bdaacb9427