apm-agent-plugins/apm-profiling-plugin/src/main/java/co/elastic/apm/agent/profiler/collections/Int2IntHashMap.java [721:753]:
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            final int mask = entries.length - 1;

            for (int keyIndex = positionCounter - 2; keyIndex >= stopCounter; keyIndex -= 2)
            {
                final int index = keyIndex & mask;
                if (entries[index + 1] != missingValue)
                {
                    isPositionValid = true;
                    positionCounter = keyIndex;
                    --remaining;
                    return;
                }
            }

            isPositionValid = false;
            throw new IllegalStateException();
        }

        public void remove()
        {
            if (isPositionValid)
            {
                final int position = keyPosition();
                entries[position + 1] = missingValue;
                --size;

                compactChain(position);

                isPositionValid = false;
            }
            else
            {
                throw new IllegalStateException();
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apm-agent-plugins/apm-profiling-plugin/src/main/java/co/elastic/apm/agent/profiler/collections/Long2LongHashMap.java [718:750]:
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            final int mask = entries.length - 1;

            for (int keyIndex = positionCounter - 2; keyIndex >= stopCounter; keyIndex -= 2)
            {
                final int index = keyIndex & mask;
                if (entries[index + 1] != missingValue)
                {
                    isPositionValid = true;
                    positionCounter = keyIndex;
                    --remaining;
                    return;
                }
            }

            isPositionValid = false;
            throw new IllegalStateException();
        }

        public void remove()
        {
            if (isPositionValid)
            {
                final int position = keyPosition();
                entries[position + 1] = missingValue;
                --size;

                compactChain(position);

                isPositionValid = false;
            }
            else
            {
                throw new IllegalStateException();
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