public Collection<LogSegment> higherSegments(long baseOffset) {
        Long higherOffset = segments.higherKey(baseOffset);
        if (higherOffset != null)
            return segments.tailMap(higherOffset, true).values();
        return Collections.emptyList();
    }
@return an iterable with log segments ordered from lowest base offset to highest,
        each segment returned has a base offset strictly greater than the provided baseOffset.
storage/src/main/java/org/apache/kafka/storage/internals/log/LogSegments.java