This is the root package, which contains the PDP class where most people will want to start. This package also contains most of the classes that represent the XML elements from the XACML policy schema, like Target, Policy, Rule, and Obligation. Most of the classes here are used when parsing or processing a policy, but a few (like EvaluationCtx) are used throughout the code and by many of the extension APIs. There are also some common Exceptions here.