Specifies that no security roles are allowed to invoke the specified
method(s) - i.e that the methods are to be excluded from execution in
the J2EE container.
The ManagedBean annotation marks a POJO (Plain Old Java Object) as a
ManagedBean.A ManagedBean supports a small set of basic services such as
resource injection, lifecycle callbacks and interceptors.
The PreDestroy annotation is used on methods as a callback notification to
signal that the instance is in the process of being removed by the
container.