Airship\Engine\Security\Filter\InputFilterContainer::addFilter PHP Method

    public function addFilter(string $path, FilterInterface $filter) : FilterContainerInterface
    {
        if (!isset($this->filterMap[$path])) {
            $this->filterMap[$path] = [];
        }
        $this->filterMap[$path][] = $filter->setIndex($path);
        return $this;
    }