src/Neuron/GameServer/Mappers/CachedChatMapper.php
public function getPrivateChatUpdates (Neuron_GameServer_Player $target, $since = null)
	{
		if (isset ($since))
		{

		}

		return parent::getPrivateChatUpdates ($target, $since);
	}
public function getPrivateChatUpdates (Neuron_GameServer_Player $target, $since = null)
	{
		if (isset ($since))
		{

		}

		return parent::getPrivateChatUpdates ($target, $since);
	}
If $since is said, return all events since "since".
If $since is not said, return the single latest event.

($since is obviously the pu_id)