public interface Entry extends Serializable
 Each field of an entry must be a public reference (object) type.
 You cannot store primitive types in fields of an
 Entry.  An Entry may have any number of
 methods or constructors.  Each field is serialized separately, so
 references between two fields of an entry will not be reconstituted
 to be shared references, but instead to separate copies of the
 original object.
ServiceRegistrar