Merge commit 'e92fdd261eed516a8821675ceca971d1c90d772b' * commit 'e92fdd261eed516a8821675ceca971d1c90d772b': Return immutable copies of private callList.
Merge commit 'e92fdd261eed516a8821675ceca971d1c90d772b' * commit 'e92fdd261eed516a8821675ceca971d1c90d772b': Return immutable copies of private callList.