This class defines a message authentication policy.
A ClientAuthContext uses this class to communicate
(at module initialization time) request and response message protection
policies to its ClientAuthModule objects.
A ServerAuthContext uses this class to communicate
request and response message protection
policies to its ServerAuthModule objects.
Get the target policies that comprise the authentication policy.
return
An array of target authentication policies, where each element
describes an authentication policy and the parts of the message to which
the authentication policy applies. This method returns null to indicate
that no security operations should be performed on the messages to which
the policy applies. This method never returns a zero-length array.
When this method returns an array of target policies, the
order of elements in the array represents the order that the
corresponding message transformations or validations described
by the target policies are to be performed by the authentication
module.