Definition of a service advisor, which (by default) is derived from a service advisor method. Service advisor methods are static or instance methods on module classes prefixed with "advise". When a service is realized, a list of matching AdvisorDefs is generated, then ordered, and from each a {@link org.apache.tapestry5.ioc.ServiceAdvisor} isobtained and invoked.
Note: service decorators (via {@link org.apache.tapestry5.ioc.def.DecoratorDef} are applied
around theinterceptor generated via service advisors, (for compatibility with Tapestry 5.0). In general, you should use service decoration or service advice, not both.
@since 5.1.0.0