private void setSlowCase(DynamicObject store, Object value) {
Shape oldShape = store.getShape();
Shape newShape = oldShape.defineProperty(getKey(), value, getFlags());
if (store.updateShape()) {
oldShape = store.getShape();
}
assert newShape.isValid() && oldShape.isValid();
Property newProperty = newShape.getProperty(getKey());
newProperty.setSafe(store, value, oldShape, newShape);
}
