user_view_multiple($accounts, $view_mode = 'full', $langcode = NULL)
Constructs a drupal_render() style array from an array of loaded users.
Parameters
\Drupal\user\UserInterface[] $accounts: An array of user accounts as returned by User::loadMultiple().
string $view_mode: (optional) View mode, e.g., 'full', 'teaser', etc. Defaults to 'teaser.'
string|null $langcode: (optional) A language code to use for rendering. Defaults to the global content language of the current request.
Return value
a