am 7525da02: am 99033332: am b6af87ca: am e5bf7064: am 964a4121: Merge "[Improve docs for AccountManager] Currently, the docs for AccountManager are somewhat misleading and may cause developer errors. To avoid them, we are properly documenting it." into mnc-dev

* commit '7525da02b86be6406922151b5fdb436b9de5c971':
  [Improve docs for AccountManager] Currently, the docs for AccountManager are somewhat misleading and may cause developer errors. To avoid them, we are properly documenting it.