public function __construct($body = null, $contentType = null, $charset = null)
{
call_user_func_array(array($this, 'Swift_Mime_MimePart::__construct'), Swift_DependencyContainer::getInstance()->createDependenciesFor('mime.part'));
if (!isset($charset)) {
$charset = Swift_DependencyContainer::getInstance()->lookup('properties.charset');
}
$this->setBody($body);
$this->setCharset($charset);
if ($contentType) {
$this->setContentType($contentType);
}
}