docs: @Override
      public String getSignature(String baseString, String apiSecret, String tokenSecret) {
          try {
              Preconditions.checkEmptyString(apiSecret, "Api secret cant be null or empty string");
              return OAuthEncoder.encode(apiSecret) + '&' + OAuthEncoder.encode(tokenSecret);
          } catch (Exception e) {
              throw new OAuthSignatureException(baseString, e);
          }
      }