private static @NotNull String preprocess(@NotNull String fieldName) {
    if (fieldName.startsWith("SPACE_WITHIN")) {
      return fieldName.replace("SPACE_WITHIN", "SPACES_WITHIN");
    }
    else if (fieldName.startsWith("SPACE_AROUND")) {
      return fieldName.replace("SPACE_AROUND", "SPACES_AROUND");
    }
    return fieldName;
  }
private static @NotNull String preprocess(@NotNull String fieldName)