code: public void serviceName_voicemail_changeRouting_POST(String serviceName, OvhVoicefaxRoutingEnum routing) throws IOException {
  		String qPath = "/freefax/{serviceName}/voicemail/changeRouting";
  		StringBuilder sb = path(qPath, serviceName);
  		HashMap<String, Object>o = new HashMap<String, Object>();
  		addBody(o, "routing", routing);
  		exec(qPath, "POST", sb.toString(), o);
  	}
docs: Disable/Enable voicemail. Available only if the line has fax capabilities
  
  REST: POST /freefax/{serviceName}/voicemail/changeRouting
  @param routing [required] Activate or Desactivate voicemail on the line
  @param serviceName [required] Freefax number