private String changeName(String name) {
    switch (changeType) {
      case TO_UPPERCASE:
        return name.toUpperCase(Locale.ROOT);
      case TO_LOWERCASE:
        return name.toLowerCase(Locale.ROOT);
      default:
        throw new UnsupportedOperationException("Unsupported change type: " + changeType);
    }
  }
Change the field name of a schema, change to uppercase or lowercase.

@param changeType TO_UPPERCASE or TO_LOWERCASE
amoro-format-mixed/amoro-mixed-hive/src/main/java/org/apache/amoro/hive/utils/ChangeFieldName.java