code: public CRestBuilder basicAuth(String username, String password) {
          this.auth = "basic";
          this.username = username;
          this.password = password;
          return this;
      }
docs: <p>Configures the resulting <b>CRest</b> instance to authenticate all requests using Basic Auth</p>
  @param username user name to authenticate the requests with
  @param password password to authenticate the requests with
  @return current builder