* @return an array of EOSQLExpressions for creating this column
*/
@SuppressWarnings("unchecked")
public NSArray<EOSQLExpression> _createExpressions() {
EOSchemaSynchronization schemaSynchronization = _table.database().synchronizationFactory();
NSArray<EOSQLExpression> expressions = schemaSynchronization.statementsToInsertColumnForAttribute(_newAttribute(), NSDictionary.EmptyDictionary);
ERXMigrationDatabase._ensureNotEmpty(expressions, "add column", true);
return expressions;
}
/**