Why no @Local interface for EntityHome sub-classes?

[smokingapipe]

Simple question: When I create a session bean, I need to create the bean itself, and then an interface for the bean, with a @Local tag. For example, FooAction, and then @Local interface Foo.

This is probably an obvious question, but...

Why is no interface needed with actions which extend EntityHome?

I'm starting to make greater use of EntityHome because it seems to simplify things, but I'm trying to understand how it compares to a regular session bean.

[fhh]

It is a plain Seam component not an enterprise bean.

Regards

Felix