src/Traits/ArrayAccess.php
public function offsetGet($offset) {
        if($this->offsetExists($offset)) {
            return $this->parameters->get($offset);
        }
        return null;
    }
public function offsetGet($offset) {
        if($this->offsetExists($offset)) {
            return $this->parameters->get($offset);
        }
        return null;
    }
Offset to retrieve
@param mixed $offset
@return mixed Can return all value types.