Java SDK receiving client

ReceivingService receiving = new ReceivingService();

String json = receiving.listReceivingDomains();

String json = receiving.createReceivingDomain("support");

String json = receiving.getReceivingDomain(1);

String json = receiving.deleteReceivingDomain(1);

String json = receiving.listReceivingMailboxes(domainId);

String json = receiving.createReceivingMailbox(domainId, "intake", "SecurePass123!", null);

String json = receiving.getReceivingMailbox(domainId, mailboxId);

String json = receiving.deleteReceivingMailbox(domainId, mailboxId);

String json = receiving.listReceivedEmails(10, null, null);

String json = receiving.getReceivedEmail(emailId);

byte[] data = receiving.getReceivedEmailAttachment(emailId, attachmentId);
Files.write(Paths.get("report.pdf"), data);