code: public static boolean containsWebSocketScheme(URI uri) {
          Objects.requireNonNull(uri, "no URI object given");
  
          final String scheme = uri.getScheme();
          if (scheme != null && (scheme.equals(WS_SCHEME) || scheme.equals(WSS_SCHEME))) {
              return true;
          }
  
          return false;
      }
docs: Checks if the given URI is a contains a valid WebSocket scheme