code: public OvhFunctionKey billingAccount_line_serviceName_phone_functionKey_keyNum_GET(String billingAccount, String serviceName, Long keyNum) throws IOException {
  		String qPath = "/telephony/{billingAccount}/line/{serviceName}/phone/functionKey/{keyNum}";
  		StringBuilder sb = path(qPath, billingAccount, serviceName, keyNum);
  		String resp = exec(qPath, "GET", sb.toString(), null);
  		return convertTo(resp, OvhFunctionKey.class);
  	}
docs: Get this object properties
  
  REST: GET /telephony/{billingAccount}/line/{serviceName}/phone/functionKey/{keyNum}
  @param billingAccount [required] The name of your billingAccount
  @param serviceName [required]
  @param keyNum [required] The number of the function key