JPA Eclipselink ManyToOneMapping does not support HistoryPolicy

I tried creating an Entity with a nullable @ManyToOne relationship using a @JoinTable.  While JPA supports this just fine, I ran into problems when trying to Implement a EclipseLink's HistoryPolicy using an EntityCustomizer. 

I wanted to do this:

ManyToOneMapping mapping = (ManyToOneMapping)descriptor.getMappingForAttributeName(FIELD_NAME);
mapping.setHistoryPolicy(...);

Alas, ManyToOneMapping has no setHistoryPolicy() method....it just isn't an implemented feature.

I searched the Web and found little help.  Documentation for HistoryPolicy is very light.  I did find some suggestions that HistoryPolicy only supports some mappings but not others.

Conclusion: ManyToOne relationships with a JoinTable are not compatible with HistoryPolicy.  My workaround is to use a nullable JoinColumn for this relationship.