public function __construct($fullName = null)
{
if ($fullName) {
list($this->ownerName, $this->name) = explode('/', $fullName);
}
$this->createdAt = new \DateTime();
$this->updatedAt = new \DateTime();
$this->lastCommitAt = new \DateTime('2010-01-01');
$this->activities = new ArrayCollection();
$this->contributors = new ArrayCollection();
$this->scores = new ArrayCollection();
$this->keywords = new ArrayCollection();
$this->favorers = new ArrayCollection();
}