question: create an iterator iterator wrappingthe specified doubleiterator doubleiterator . when the given iterator is null , returns null . concode_field_sep DoubleIterator _iterator concode_field_sep Object next concode_elem_sep boolean hasNext concode_elem_sep void remove
target: Iterator function ( DoubleIterator arg0 ) { return null == arg0 ? null : new DoubleIteratorIterator ( arg0 ) ; }