code: @Override
      public Map<URI, MatchResult> listMatchesOfType(URI origin, MatchType type) {
          return listMatchesWithinRange(origin, type, type);
      }
docs: Obtains all the matching resources that have a precise MatchType with the URI of {@code origin}.
  
  @param origin URI to match
  @param type   the MatchType we want to obtain
  @return a Map containing indexed by the URI of the matching resource and containing the particular {@code MatchResult}. If no
  result is found the Map should be empty not null.