Nette\DI\ContainerBuilder::addAlias PHP Method

    public function addAlias($alias, $service)
    {
        if (!is_string($alias) || !$alias) {
            // builder is not ready for falsy names such as '0'
            throw new Nette\InvalidArgumentException(sprintf('Alias name must be a non-empty string, %s given.', gettype($alias)));
        } elseif (!is_string($service) || !$service) {
            // builder is not ready for falsy names such as '0'
            throw new Nette\InvalidArgumentException(sprintf('Service name must be a non-empty string, %s given.', gettype($service)));
        } elseif (isset($this->aliases[$alias])) {
            throw new Nette\InvalidStateException("Alias '{$alias}' has already been added.");
        } elseif (isset($this->definitions[$alias])) {
            throw new Nette\InvalidStateException("Service '{$alias}' has already been added.");
        }
        $this->aliases[$alias] = $service;
    }