src/ArrayContainer.php
protected function applyFilters($value, $key)
    {
        foreach ($this->filters as $filter) {
            $value = $filter($value, $key);
        }
        return $value;
    }
protected function applyFilters($value, $key)
    {
        foreach ($this->filters as $filter) {
            $value = $filter($value, $key);
        }
        return $value;
    }
It applies filter function to requested value of array.

@param $value
@param $key
@return mixed