GORM Criteria Query with Alias

List results = criteria.listDistinct () {
            createAlias('samples','s',CriteriaSpecification.LEFT_JOIN)
            createAlias('s.sampleRequests', 'sr', CriteriaSpecification.LEFT_JOIN)
            
             or {
                isNull('s.id')
                sizeEq('s.sampleRequests', 0)
                //Needs to be any samples available, not all samples available.
                // In other words check all items in the collection and if they all meet
                // the condition then exclude
                and{
                    not{
                        between('sr.bookingStartDate', availableFrom, availableTo)
                    }
                    not{
                        between('sr.bookingEndDate', availableFrom, availableTo)
                    }
                    'in' ('sr.requestStatusBrand',['Approved','Picked Up','Returning'])
                }
            }
           
        }