||PrincipalRule is a paired association from principal to rule.
||Spring component to hold criterion resolvers for building profiling rules.
||A ProfilingRule defines a list of criteria used when evaluating a request
to determine the location of a specific resource.
||A RuleCriterion specifies one criterion in a list of profiling rule criteria.
||Resolves rule criterion based on a single criterion and
runtime request context state.