Merge "Document behavior of object references in Animator classes" into nyc-dev am: faa5726 am: 5d9a186
am: c66100f

* commit 'c66100fdc028b794bc47d136dddb451fad349cc3':
  Document behavior of object references in Animator classes

Change-Id: I6e2c252b837d20a1321b38d5012cbe66a690e73f