code: private static void setIfNotNull(String name, Object value, FormBody.Builder form) {
          if (value != null) {
              if (value instanceof Boolean) {
                  String numValue = ((Boolean) value) ? "1" : "0";
                  form.add(name, numValue);
              } else {
                  form.add(name, String.valueOf(value));
              }
          }
      }
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