BlockReferenceNode example

 else {
            $body = new Node([
                new PrintNode($this->parser->getExpressionParser()->parseExpression(), $lineno),
            ]);
        }
        $stream->expect(/* Token::BLOCK_END_TYPE */ 3);

        $block->setNode('body', $body);
        $this->parser->popBlockStack();
        $this->parser->popLocalScope();

        return new BlockReferenceNode($name, $lineno, $this->getTag());
    }

    public function decideBlockEnd(Token $token): bool
    {
        return $token->test('endblock');
    }

    public function getTag(): string
    {
        return 'block';
    }
}