question: gets the value of the pty 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 pty property . for example , to add a new item , do as follows : getpty . add newitem ; objects of the following type s are allowed in the list nestedparties4blockt concode_field_sep String fillExecID concode_elem_sep BigDecimal fillPx concode_elem_sep List<NestedParties4BlockT> pty concode_elem_sep BigInteger lqdtyInd concode_elem_sep BigDecimal fillQty concode_field_sep void setFillExecID concode_elem_sep BigDecimal getFillQty concode_elem_sep void setFillPx concode_elem_sep BigInteger getLqdtyInd concode_elem_sep void setFillQty concode_elem_sep String getFillExecID concode_elem_sep void setLqdtyInd concode_elem_sep BigDecimal getFillPx
target: List < NestedParties4BlockT > function ( ) { if ( pty == null ) { pty = new ArrayList < NestedParties4BlockT > ( ) ; } return this . pty ; }