docs: private Node getFinallyAtTarget(Node node) {
          if (node == null) {
              return null;
          }
          if (node.getType() == Token.FINALLY) {
              return node;
          }
          if (node.getType() == Token.TARGET) {
              Node fBlock = node.getNext();
              if (fBlock != null && fBlock.getType() == Token.FINALLY) {
                  return fBlock;
              }
          }
          throw Kit.codeBug("bad finally target");
      }