Squashed '$external/ProxyGenerator/' changes from 12076d3..c1facd8

c1facd8 ...

git-subtree-dir: $external/ProxyGenerator
git-subtree-split: c1facd87a134ab2245f4f1fe49927e2564a2bcbf
Merge commit '5a2eac576573a3dc1a78175dfbc704f5ac46866d'
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