public AccountInterface::getUsername()
Returns the unaltered login name of this account.
Return value
string An unsanitized plain-text string with the name of this account that is used to log in. Only display this name to admins and to the user who owns this account, and only in the context of the name used to log in. For any other display purposes, use \Drupal\Core\Session\AccountInterface::getDisplayName() instead.
Deprecated in Drupal 8.0.0, will be removed before Drupal 9.0.0. Use \Drupa