According to the provided type information for AuthenticatedUser, the get_emails function returns a list of string. However, in my experience with version 1.54.1 of this module, it appears to return a list of dictionaries that looks like the following:

[
  {
    "email": "xxx@yyy.com",
    "primary": false,
    "verified": true,
    "visibility": null
  },
  ...
]