public function setDefault($option, $value)
    {
        // Setting is not possible once resolving starts, because then lazy
        // options could manipulate the state of the object, leading to
        // inconsistent results.
        if ($this->locked) {
            throw new AccessException('Default values cannot be set from a lazy option or normalizer.');
        }

        // If an option is a closure that should be evaluated lazily, store it
        // in the "lazy" property.
        if ($value instanceof \Closure) {
            $reflClosure = new \ReflectionFunction($value);
            $params = $reflClosure->getParameters();

            if (isset($params[0]) && null !== ($class = $params[0]->getClass()) && Options::class === $class->name) {
                // Initialize the option if no previous value exists
                if (!isset($this->defaults[$option])) {
                    $this->defaults[$option] = null;
                }

                // Ignore previous lazy options if the closure has no second parameter
                if (!isset($this->lazy[$option]) || !isset($params[1])) {
                    $this->lazy[$option] = [];
                }

                // Store closure for later evaluation
                $this->lazy[$option][] = $value;
                $this->defined[$option] = true;

                // Make sure the option is processed and is not nested anymore
                unset($this->resolved[$option], $this->nested[$option]);

                return $this;
            }

            if (isset($params[0]) && null !== ($class = $params[0]->getClass()) && self::class === $class->name && (!isset($params[1]) || (null !== ($class = $params[1]->getClass()) && Options::class === $class->name))) {
                // Store closure for later evaluation
                $this->nested[$option][] = $value;
                $this->defaults[$option] = [];
                $this->defined[$option] = true;

                // Make sure the option is processed and is not lazy anymore
                unset($this->resolved[$option], $this->lazy[$option]);

                return $this;
            }
        }

        // This option is not lazy nor nested anymore
        unset($this->lazy[$option], $this->nested[$option]);

        // Yet undefined options can be marked as resolved, because we only need
        // to resolve options with lazy closures, normalizers or validation
        // rules, none of which can exist for undefined options
        // If the option was resolved before, update the resolved value
        if (!isset($this->defined[$option]) || \array_key_exists($option, $this->resolved)) {
            $this->resolved[$option] = $value;
        }

        $this->defaults[$option] = $value;
        $this->defined[$option] = true;

        return $this;
    }