Override lookup of a field extending RecId

Using the code example below, I want to show how to override the lookup method of a RecId/RefRecId field. Such a lookup is also referred to as a Referencelookup.

The example serves quite concretely to be able to select a financial dimension, but only one of the type cost center.

public Common lookupReference(FormReferenceControl _formReferenceControl)
{
    SysReferenceTableLookup sysRefTableLookup;
    Query lookupQuery = new Query();
    QueryBuildDataSource lookupQueryDataSource;
                               
    sysRefTableLookup =
        SysReferenceTableLookup::newParameters(
            tableNum(DimensionAttribute), _formReferenceControl);
                      
    sysRefTableLookup.addLookupfield(fieldNum(DimensionAttribute, Name));
                    
    lookupQueryDataSource =
    lookupQuery.addDataSource(tableNum(DimensionAttribute));
               
    lookupQueryDataSource.addRange(
        fieldNum(DimensionAttribute, BackingEntityType)).value(
            queryValue(tableNum(DimAttributeOMCostCenter)));
    lookupQueryDataSource.addRange(
        fieldNum(DimensionAttribute, Type)).value(
            queryValue(DimensionAttributeType::ExistingList));

    sysRefTableLookup.parmQuery(lookupQuery);
               
    return sysRefTableLookup.performFormLookup();
}