public function loadInternalCommands()
{
$commands = array(new \PhpSlackBot\Command\PingPongCommand(), new \PhpSlackBot\Command\CountCommand(), new \PhpSlackBot\Command\DateCommand(), new \PhpSlackBot\Command\PokerPlanningCommand());
foreach ($commands as $command) {
if (!isset($this->commands[$command->getName()])) {
$this->commands[$command->getName()] = $command;
}
}
}