Merge "document the return type of getImportance" into nyc-dev
am: 3041d49d88

* commit '3041d49d888cf0732c8aafb88d1d931b696b1d41':
  document the return type of getImportance

Change-Id: I3cf45be03a8e62ca48d25d26b9b234bb9f800146