code: public ArrayList<OvhTask> serviceName_dedicatedHorizon_customerUser_POST(String serviceName, String email, String password, String username) throws IOException {
  		String qPath = "/horizonView/{serviceName}/dedicatedHorizon/customerUser";
  		StringBuilder sb = path(qPath, serviceName);
  		HashMap<String, Object>o = new HashMap<String, Object>();
  		addBody(o, "email", email);
  		addBody(o, "password", password);
  		addBody(o, "username", username);
  		String resp = exec(qPath, "POST", sb.toString(), o);
  		return convertTo(resp, t2);
  	}
docs: Create a new customer user
  
  REST: POST /horizonView/{serviceName}/dedicatedHorizon/customerUser
  @param email [required] Email for your new user in Active diRectory.
  @param username [required] Username for your new user in Active Directory.
  @param password [required] New password for this Horizon View user. It must fits your HaaS password policy. If this field is empty, a random password will be generated and sent to your  email.
  @param serviceName [required] Domain of the service