src/ContainerParser/ContainerParser.php
protected function errorUnexpectedToken($token)
    {
        $class = new \ReflectionClass($token);
        $constants = array_flip($class->getConstants());

        return new ContainerParserException('unexpected "' . $constants[$token->getType()] . '" given at line ' . $token->getLine());
    }
protected function errorUnexpectedToken($token)
    {
        $class = new \ReflectionClass($token);
        $constants = array_flip($class->getConstants());

        return new ContainerParserException('unexpected "' . $constants[$token->getType()] . '" given at line ' . $token->getLine());
    }
Create new unexpected token exception

@param T                 $token
@return ContainerParserException