apm-agent-plugins/apm-profiling-plugin/src/main/java/co/elastic/apm/agent/profiler/collections/Int2ObjectHashMap.java [801:839]:
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            final int mask = values.length - 1;

            for (int i = posCounter - 1; i >= stopCounter; i--)
            {
                final int index = i & mask;
                if (null != values[index])
                {
                    posCounter = i;
                    isPositionValid = true;
                    --remaining;
                    return;
                }
            }

            isPositionValid = false;
            throw new IllegalStateException();
        }

        public abstract T next();

        public void remove()
        {
            if (isPositionValid)
            {
                final int position = position();
                values[position] = null;
                --size;

                compactChain(position);

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

        final void reset()
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apm-agent-plugins/apm-profiling-plugin/src/main/java/co/elastic/apm/agent/profiler/collections/Long2ObjectHashMap.java [801:839]:
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            final int mask = values.length - 1;

            for (int i = posCounter - 1; i >= stopCounter; i--)
            {
                final int index = i & mask;
                if (null != values[index])
                {
                    posCounter = i;
                    isPositionValid = true;
                    --remaining;
                    return;
                }
            }

            isPositionValid = false;
            throw new IllegalStateException();
        }

        public abstract T next();

        public void remove()
        {
            if (isPositionValid)
            {
                final int position = position();
                values[position] = null;
                --size;

                compactChain(position);

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

        final void reset()
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