not supported by this implement . concode_field_sep T current concode_elem_sep List<T> visited concode_elem_sep Iterator<T> source concode_elem_sep int position concode_field_sep T next concode_elem_sep void add concode_elem_sep T current concode_elem_sep void set concode_elem_sep T previous concode_elem_sep boolean hasPrevious concode_elem_sep boolean hasNext concode_elem_sep int position concode_elem_sep int position concode_elem_sep int nextIndex concode_elem_sep int previousIndex
void function ( ) { throw new UnsupportedOperationException ( ) ; }