question: closes the iterator , handling null and ignoring exceptions . concode_field_sep BufferedReader bufferedReader concode_elem_sep String cachedLine concode_elem_sep boolean finished concode_field_sep Object next concode_elem_sep String nextLine concode_elem_sep boolean hasNext concode_elem_sep boolean isValidLine concode_elem_sep void close concode_elem_sep void remove
target: void function ( LineIterator arg0 ) { if ( arg0 != null ) { arg0 . close ( ) ; } }