class MetadataChangesOnActionsGenerator {

    public StepDiff computeCreatedColumns(final RowMetadata metadata, List<RunnableAction> currentActions,
            List<RunnableAction> newActions) {
        RowMetadata workingMetadata = compileActionsOnMetadata(currentActions, metadata);
        return computeCreatedColumns(newActions, workingMetadata);
    }

}