private static void addColumnInternal(
      Types.NestedField field, String fieldPrefix, Collection<Add> adds) {
    adds.add(new Add(field, fieldPrefix));
  }
Apply the pending changes to the original schema and returns the result.

<p>This does not result in a permanent update.

@return the result Schema when all pending updates are applied
amoro-format-iceberg/src/main/java/org/apache/amoro/op/KeyedSchemaUpdate.java