<?php

namespace LevelUp;

class ValueObject
{
    private $foo;

    /**
     * @return mixed|null
     */
    public function getFoo()
    {
        return $this->foo;
    }

    /**
     * Sets the foo value for the object
     *
     * @param mixed $foo
     *
     * @return void
     */
    public function setFoo($foo)
    {
        $this->foo = $foo;
        return $this;
    }
}