Swagger\Annotations\Items::validate PHP Method

    public function validate($parents = [], $skip = [])
    {
        if (in_array($this, $skip, true)) {
            return true;
        }
        $valid = parent::validate($parents, $skip);
        if (!$this->ref) {
            if ($this->type === 'array' && $this->items === null) {
                Logger::notice('@SWG\\Items() is required when ' . $this->identity() . ' has type "array" in ' . $this->_context);
                $valid = false;
            }
            $parent = end($parents);
            if (is_object($parent) && ($parent instanceof Parameter && $parent->in !== 'body' || $parent instanceof Header)) {
                // This is a "Items Object" https://github.com/swagger-api/swagger-spec/blob/master/versions/2.0.md#items-object
                // A limited subset of JSON-Schema's items object.
                $allowedTypes = ['string', 'number', 'integer', 'boolean', 'array'];
                if (in_array($this->type, $allowedTypes) === false) {
                    Logger::notice('@SWG\\Items()->type="' . $this->type . '" not allowed inside a ' . $parent->_identity([]) . ' must be "' . implode('", "', $allowedTypes) . '" in ' . $this->_context);
                    $valid = false;
                }
            }
        }
        return $valid;
        // @todo Additional validation when used inside a Header or Parameter context.
    }