public function __construct($mediaType, array $directives = [])
{
$this->mediaType = new MediaType($mediaType);
Directives::mapDirectives($this, $directives);
}
public function __construct($name, $value = NULL, array $directives = [])
{
$this->name = trim($name);
$this->value = $value;
Directives::mapDirectives($this, $directives);
}