/**
  * Get the MetaContact corresponding to the chat. The chat must correspond to a one on one
  * conversation. If it is a group chat an exception will be thrown.
  *
  * @param chat The chat to get the MetaContact from
  * @return The MetaContact corresponding to the chat.
  */
 public MetaContact getChatContact(Chat chat) {
   ChatSession chatSession = (ChatSession) chat;
   return chatSession.getMetaContact();
 }