Generated *Key classes define serialVersionUID but do not implement Serializable

There's no reason to include a serialVersionUID in a class that doesn't implement Serializable. Note that the fields of the keys are generally not serializable, so this isn't a matter of adding implemented Serializable. Recommendation is remove serialVersionUID.

e.g.:

public class CapabilityKey
implements Identifier<Capability>

{ private static final long serialVersionUID = 3133965736403838075L; final private CapabilityName _name; ... }