public List<FieldSchema> getTypeChanged() {
      return typeChanged;
    }
Compares two lists of columns to each other to find the (singular) column that was moved. This works ideally for
identifying the column that was moved by an ALTER TABLE ... CHANGE COLUMN command.

Note: This method is only suitable for finding a single reordered column.
Consequently, this method is NOT suitable for handling scenarios where multiple column reorders are possible at the
same time, such as ALTER TABLE ... REPLACE COLUMNS commands.

@param updated The list of the columns after some updates have taken place (if any)
@param old The list of the original columns
@param renameMapping A map of name aliases for the updated columns (e.g. if a column rename occurred)
@return A pair consisting of the reordered column's name, and its preceding column's name (if any).
        Returns a null in case there are no out of order columns.
iceberg/iceberg-catalog/src/main/java/org/apache/iceberg/hive/HiveSchemaUtil.java