PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection::getParameters PHP Method

    public function getParameters() : array
    {
        if ($this->parameters === null) {
            $parameters = [];
            $isOptional = true;
            foreach (array_reverse($this->classMethod->params) as $parameter) {
                if (!$isOptional || $parameter->default === null) {
                    $isOptional = false;
                }
                $parameters[] = new PhpParameterFromParserNodeReflection($parameter->name, $isOptional, $this->realParameterTypes[$parameter->name], isset($this->phpDocParameterTypes[$parameter->name]) ? $this->phpDocParameterTypes[$parameter->name] : null, $parameter->byRef, $parameter->default);
            }
            $this->parameters = array_reverse($parameters);
        }
        return $this->parameters;
    }