trueskill/PHPSkills/FactorGraphs/FactorGraph.php

<?php
namespace Moserware\Skills\FactorGraphs;

class FactorGraph
{
    private $_variableFactory;

    public function &getVariableFactory()
    {
        return $this->_variableFactory;
    }

    public function setVariableFactory(&$factory)
    {
        $this->_variableFactory = &$factory;
    }
}
?>