public function__construct(array $defaultContext = []) {
if (\array_key_exists(self::ESCAPE_CHAR_KEY, $defaultContext)) {
trigger_deprecation('symfony/serializer', '7.2', 'Setting the "csv_escape_char" option is deprecated. The option will be removed in 8.0.');
}
$this->defaultContext = array_merge($this->defaultContext, $defaultContext);
}