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Document reduce: avoid re-using section ids

Authored by Nikerabbit on Oct 23 2018, 9:09 AM.

Description

Document reduce: avoid re-using section ids

Use object wrapper to emulate pass-by-reference. Follows-up 7f996f38.

Bug: T207445
Change-Id: I4da8d12c515bf3bfb1f2029864af5742585c74b7