||AbstractPolicyOperator provides an implementation of few functions of
PolicyOperator interface that other PolicyOperators can use.
||All is a PolicyOperator that require all its PolicyComponents to be met.
||AssertionFactory is used to create an Assertion from an Element.
||Constants contains the set of Constants that are used throughout the Neethi2
||ExactlyOne PolicyOperator requires exactly one of its PolicyComponents to be
||Policy is a PolicyOperator that requires to satisfy all of its
||PolicyBuilder provides set of methods to create a Policy object from an
InputStream, Element, XMLStreamReader, OMElement, etc..
||PolicyEngine provides set of static methods to create a Policy object from an
InputStream, OMElement, ..
||PolicyReference is a wrapper that holds explicit PolicyReferences.
||Provides a default implementation of PolicyRegistry interface.