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echoLine example

        $prev = $this->outputStream ?? $this->lineDumper;

        if (\is_callable($output)) {
            $this->outputStream = null;
            $this->lineDumper = $output;
        } else {
            if (\is_string($output)) {
                $output = fopen($output, 'w');
            }
            $this->outputStream = $output;
            $this->lineDumper = $this->echoLine(...);
        }

        return $prev;
    }

    /** * Sets the default character encoding to use for non-UTF8 strings. * * @return string The previous charset */
    public function setCharset(string $charset): string
    {

if (class_exists(VarCloner::class)) {
            $this->cloner = new VarCloner();
            $this->cloner->addCasters([
                '*' => $this->castObject(...),
            ]);

            $this->outputBuffer = fopen('php://memory', 'r+');
            if ($this->options['multiline']) {
                $output = $this->outputBuffer;
            } else {
                $output = $this->echoLine(...);
            }

            $this->dumper = new CliDumper($output, null, CliDumper::DUMP_LIGHT_ARRAY | CliDumper::DUMP_COMMA_SEPARATOR);
        }
    }

    public function formatBatch(array $records): mixed
    {
        foreach ($records as $key => $record) {
            $records[$key] = $this->format($record);
        }