public Item(BracketedName fromAlias, BracketedName toAlias, ReferenceMap referenceMap)
{
FromAlias = fromAlias;
ToAlias = toAlias;
ReferenceMap = referenceMap;
}
public Item AddJoin(BracketedName fromAlias, BracketedName toAlias, ReferenceMap referenceMap)
{
return _joins[referenceMap.Property] = new Item(fromAlias, toAlias, referenceMap);
}