this.key = key;
users = new MandrillUsersApi(key);
messages = new MandrillMessagesApi(key);
tags = new MandrillTagsApi(key);
rejects = new MandrillRejectsApi(key);
whitelists = new MandrillWhitelistsApi(key);
senders = new MandrillSendersApi(key);
urls = new MandrillUrlsApi(key);
templates = new MandrillTemplatesApi(key);
webhooks = new MandrillWebhooksApi(key);
subaccounts = new MandrillSubaccountsApi(key);