when calling clear of LazyArrayList, there is an exception "this.loadedSegments" is null

[yqbjtu]

Environment Details

• MicroStream Version:8.0
• JDK version:17
• OS:Mac
• Used springboot 2.6.8

Describe the bug

I used LazyArrayList to store some data. My dataRoot like this

class DataRoot {
Map<String, LazyArrayList> mapList

}

When some key is not needed, I'll clear the list and store list , remove the key from mapList and storing mapList.

To Reproduce

1, store 10 keys to mapList
2, close storage
3, open storage
4, clear the list

exception:
2023-05-27 17:23:51,015 ERROR a.m.o.c.base.PListContainer.writeOp [http-nio-80-exec-10] Error while writing value, errMsg:Cannot invoke "java.util.LinkedList.remove(Object)" because "this.loadedSegments" is null
java.lang.NullPointerException: Cannot invoke "java.util.LinkedList.remove(Object)" because "this.loadedSegments" is null
at one.microstream.collections.lazy.LazySegmentUnloader$Default.remove(LazySegmentUnloader.java:176)
at one.microstream.collections.lazy.LazyArrayList.clear(LazyArrayList.java:559)

Expected behavior

The list is cleared and no exception

Screenshots

Additional context

Add any other context about the problem here.

[hg-ms]

Bug Confirmed.
If clear is called after an LazyArrayList has been loaded from the storage the segment unloader does not check if the internal list of loaded segments is null.