How to use the ijson.backend.common.IncompleteJSONError function in ijson

yield ('start_array', None)
        try:
            pos, symbol = next(lexer)
            if symbol != ']':
                while True:
                    for event in IncrementalJsonParser.parse_value(lexer, symbol, pos):
                        yield event
                    pos, symbol = next(lexer)
                    if symbol == ']':
                        break
                    if symbol != ',':
                        raise ijson.backend.UnexpectedSymbol(symbol, pos)
                    pos, symbol = next(lexer)
            yield ('end_array', None)
        except StopIteration:
            raise ijson.backend.common.IncompleteJSONError('Incomplete JSON data')

pos = match.start()
                    start = pos + 1
                    while True:
                        try:
                            end = buf.index(b'"', start)
                            escpos = end - 1
                            while buf[escpos] == '\\':
                                escpos -= 1
                            if (end - escpos) % 2 == 0:
                                start = end + 1
                            else:
                                break
                        except ValueError:
                            data = socket.recv().encode('utf-8') if IS_WEBSOCKET else socket.recv(buf_size)
                            if not data:
                                raise ijson.backend.common.IncompleteJSONError('Incomplete string lexeme')

                            buf += data[1:-1] if IS_WEBSOCKET else data

                    yield discarded + pos, buf[pos:end + 1].decode('utf-8')
                    pos = end + 1
                else:
                    while match.end() == len(buf) and buf[pos] not in BYTE_ARRAY_CHARACTERS:
                        try:
                            data = socket.recv().encode('utf-8') if IS_WEBSOCKET else socket.recv(buf_size)
                            if not data:
                                break
                            buf += data[1:-1].encode('utf-8') if IS_WEBSOCKET else data
                            match = LEXEME_RE.search(buf, pos)
                            lexeme = match.group()
                        except timeout:
                            break

while symbol[0] in ('t', 'n') and len(symbol) < 4 or symbol[0] == 'f' and len(symbol) < 5:
                    _, nextpart = next(lexer)
                    if symbol == 'null':
                        yield ('null', None)
                    elif symbol == 'true':
                        yield ('boolean', True)
                    elif symbol == 'false':
                        yield ('boolean', False)
                    return

                try:
                    yield ('number', ijson.backend.common.number(symbol))
                except ijson.backend.decimal.InvalidOperation:
                    raise ijson.backend.UnexpectedSymbol(symbol, pos)
        except StopIteration:
            raise ijson.backend.common.IncompleteJSONError('Incomplete JSON data')

raise ijson.backend.UnexpectedSymbol(symbol, pos)
                    yield ('map_key', IncrementalJsonParser.unescape(symbol[1:-1]))
                    pos, symbol = next(lexer)
                    if symbol != ':':
                        raise ijson.backend.UnexpectedSymbol(symbol, pos)
                    for event in IncrementalJsonParser.parse_value(lexer, None, pos):
                        yield event
                    pos, symbol = next(lexer)
                    if symbol == '}':
                        break
                    if symbol != ',':
                        raise ijson.backend.UnexpectedSymbol(symbol, pos)
                    pos, symbol = next(lexer)
            yield ('end_map', None)
        except StopIteration:
            raise ijson.backend.common.IncompleteJSONError('Incomplete JSON data')