public IExpressionJoin <T, TQ> IsNull(bool isNull)
{
_parent.Add(isNull ? QueryMaker.IsNull(_propertyName) : QueryMaker.IsNotNull(_propertyName));
return(new ExpressionJoin <T, TQ>(_parent, _q));
}
public IExpressionJoin <T, TQ> IsNull()
{
_parent.Add(QueryMaker.IsNull(_propertyName));
return(new ExpressionJoin <T, TQ>(_parent, _q));
}