code: public void project_serviceName_credit_POST(String serviceName, String code) throws IOException {
  		String qPath = "/cloud/project/{serviceName}/credit";
  		StringBuilder sb = path(qPath, serviceName);
  		HashMap<String, Object>o = new HashMap<String, Object>();
  		addBody(o, "code", code);
  		exec(qPath, "POST", sb.toString(), o);
  	}
docs: Add credit to your project
  
  REST: POST /cloud/project/{serviceName}/credit
  @param code [required] Voucher code
  @param serviceName [required] The project id