code: public OvhPhonebookContact billingAccount_line_serviceName_phone_phonebook_bookKey_phonebookContact_id_GET(String billingAccount, String serviceName, String bookKey, Long id) throws IOException {
  		String qPath = "/telephony/{billingAccount}/line/{serviceName}/phone/phonebook/{bookKey}/phonebookContact/{id}";
  		StringBuilder sb = path(qPath, billingAccount, serviceName, bookKey, id);
  		String resp = exec(qPath, "GET", sb.toString(), null);
  		return convertTo(resp, OvhPhonebookContact.class);
  	}
docs: Get this object properties
  
  REST: GET /telephony/{billingAccount}/line/{serviceName}/phone/phonebook/{bookKey}/phonebookContact/{id}
  @param billingAccount [required] The name of your billingAccount
  @param serviceName [required]
  @param bookKey [required] Identifier of the phonebook
  @param id [required] Contact identifier