code: public void serviceName_transferCredits_POST(String serviceName, Double credits, String smsAccountTarget) throws IOException {
  		String qPath = "/sms/{serviceName}/transferCredits";
  		StringBuilder sb = path(qPath, serviceName);
  		HashMap<String, Object>o = new HashMap<String, Object>();
  		addBody(o, "credits", credits);
  		addBody(o, "smsAccountTarget", smsAccountTarget);
  		exec(qPath, "POST", sb.toString(), o);
  	}
docs: Credit transfer between two sms accounts.
  
  REST: POST /sms/{serviceName}/transferCredits
  @param smsAccountTarget [required] Sms account destination.
  @param credits [required] Amount of credits to transfer.
  @param serviceName [required] The internal name of your SMS offer