question: gets the value of the queryexpression property . this accessor method returns a reference to the live list , not a snapshot . therefore any modification you make to the returned list will be present inside the jaxb object . this is why there is not a set method for the queryexpression property . for example , to add a new item , do as follows : getqueryexpression . add newitem ; objects of the following type s are allowed in the list queryexpressiontype concode_field_sep List<ValueExpressionType> valueExpression concode_elem_sep Boolean logicalNegationIndicator concode_elem_sep List<QueryExpressionType> queryExpression concode_elem_sep long serialVersionUID concode_elem_sep LogicalOperatorCodeType logicalOperatorCode concode_field_sep void setLogicalNegationIndicator concode_elem_sep LogicalOperatorCodeType getLogicalOperatorCode concode_elem_sep Boolean isLogicalNegationIndicator concode_elem_sep List<ValueExpressionType> getValueExpression concode_elem_sep void setLogicalOperatorCode
target: List < QueryExpressionType > function ( ) { if ( queryExpression == null ) { queryExpression = new ArrayList < QueryExpressionType > ( ) ; } return this . queryExpression ; }