gets the value of the authncontextdeclref 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 authncontextdeclref property . for example , to add a new item , do as follows : getauthncontextdeclref . add newitem ; objects of the following type s are allowed in the list string concode_field_sep List<String> authnContextDeclRef concode_elem_sep AuthnContextComparisonType comparison concode_elem_sep List<String> authnContextClassRef concode_field_sep void addAuthnContextClassRef concode_elem_sep void removeAuthnContextClassRef concode_elem_sep AuthnContextComparisonType getComparison concode_elem_sep void setComparison concode_elem_sep void removeAuthnContextDeclRef concode_elem_sep List<String> getAuthnContextClassRef concode_elem_sep void addAuthnContextDeclRef
List < String > function ( ) { return Collections . unmodifiableList ( this . authnContextDeclRef ) ; }