class UnexpectedUniqueConstraintChangeGenerator extends AbstractChangeGenerator implements UnexpectedObjectChangeGenerator {
    @Override
    public int getPriority(Class<? extends DatabaseObject> objectType, Database database) {
        if (UniqueConstraint.class.isAssignableFrom(objectType)) {
            return PRIORITY_DEFAULT;
        }
        return PRIORITY_NONE;
    }

    @Override
    public Class<? extends DatabaseObject>[] runAfterTypes() {
        return null;
    }

    @Override
    public Class<? extends DatabaseObject>[] runBeforeTypes() {
        return new Class[] {
                Table.class,
                Index.class
        };
    }

    @Override
    public Change[] fixUnexpected(DatabaseObject unexpectedObject, DiffOutputControl control, Database referenceDatabase, Database comparisonDatabase, ChangeGeneratorChain chain) {<FILL_FUNCTION_BODY>}
}

        UniqueConstraint uc = (UniqueConstraint) unexpectedObject;
        if (uc.getRelation() == null) {
            return null;
        }

        DropUniqueConstraintChange change = new DropUniqueConstraintChange();
        change.setTableName(uc.getRelation().getName());
        if (control.getIncludeCatalog()) {
            change.setCatalogName(uc.getRelation().getSchema().getCatalogName());
        }
        if (control.getIncludeSchema()) {
            change.setSchemaName(uc.getRelation().getSchema().getName());
        }
        change.setConstraintName(uc.getName());

        Index backingIndex = uc.getBackingIndex();
//        if (backingIndex == null) {
//            Index exampleIndex = new Index().setTable(uc.getTable());
//            for (String col : uc.getColumns()) {
//                exampleIndex.getColumns().add(col);
//            }
//            control.setAlreadyHandledUnexpected(exampleIndex);
//        } else {
            control.setAlreadyHandledUnexpected(backingIndex);
//        }

        return new Change[] { change };
    
<methods>public non-sealed void <init>() ,public liquibase.change.Change[] fixOutputAsSchema(liquibase.change.Change[], liquibase.diff.compare.CompareControl.SchemaComparison[]) ,public liquibase.change.Change[] fixSchema(liquibase.change.Change[], liquibase.diff.compare.CompareControl.SchemaComparison[]) ,public void setRespectSchemaAndCatalogCase(boolean) <variables>private boolean respectSchemaAndCatalogCase