URI of a XACML decision Result post-processor to be enabled. A decision Result post-processor is a PDP extension that process the result(s) from the policy evaluation before the final XACML Response is created (and returned back to the requester). For example, a typical Result post-processor may combine multiple individual decisions - produced by the requestPreproc - to a single decision Result if and only if the XACML Request's CombinedDecision is set to true, as defined in XACML Multiple Decision Profile specification, section 3. There must be one and only one Java class on the classpath - say com.example.FooResultPostproc - implementing interface org.ow2.authzforce.core.pdp.api.DecisionResultPostprocessor with zero-arg constructor, and this URI must match the one returned by: new com.example.FooResultPostproc().getId() .

More info about Result Postprocessors is available on AuthzForce wiki.