code: public ProxySettings setCredentials(String id, String password)
      {
          return setId(id).setPassword(password);
      }
docs: Set credentials for authentication at the proxy server.
  This method is an alias of {@link #setId(String) setId}{@code
  (id).}{@link #setPassword(String) setPassword}{@code
  (password)}.
  
  @param id
  The ID.
  
  @param password
  The password.
  
  @return
  {@code this} object.