code: @Override
      public RequestCtx buildRequest(List<Map<URI, List<AttributeValue>>> subjects,
                                     Map<URI, AttributeValue> actions,
                                     Map<URI, AttributeValue> resources,
                                     Map<URI, AttributeValue> environment)
              throws PEPException {
          try {
              return m_contextUtil.buildRequest(subjects,
                                              actions,
                                              resources,
                                              environment,
                                              m_relationshipResolver);
          } catch (MelcoeXacmlException e) {
              throw new PEPException(e);
          }
      }
docs: /*
  (non-Javadoc)
  @see org.fcrepo.server.security.xacml.pep.ContextHandler#buildRequest(java.util.List,
  java.util.Map, java.util.Map, java.util.Map)