private function validateParameter(string $parameter): bool
    {
        $properties = explode('=', $parameter);

        return 2 != count($properties) || strtolower($properties[0]) === static::BINARY_PARAMETER;
    }
private function validateParameter(string $parameter): bool
    {
        $properties = explode('=', $parameter);

        return 2 != count($properties) || strtolower($properties[0]) === static::BINARY_PARAMETER;
    }
private function validateParameter ( string $ parameter ) : bool { $ properties = explode ( '=' , $ parameter ) ; return 2 != count ( $ properties ) || strtolower ( $ properties [ 0 ] ) === static :: BINARY_PARAMETER ; }
Validate mediatype parameter.
Validate mediatype parameter .