问谷歌脚本如何使用getActiveUser()的getGivenName()

EN

/**
 * Get current user's name, by accessing their contacts.
 *
 * @returns {String} First name (GivenName) if available,
 *                   else FullName, or login ID (userName)
 *                   if record not found in contacts.
 */
function getOwnName(){
  var email = Session.getEffectiveUser().getEmail();
  var self = ContactsApp.getContact(email);

  // If user has themselves in their contacts, return their name
  if (self) {
    // Prefer given name, if that's available
    var name = self.getGivenName();
    // But we will settle for the full name
    if (!name) name = self.getFullName();
    return name;
  }
  // If they don't have themselves in Contacts, return the bald userName.
  else {
    var userName = Session.getEffectiveUser().getUsername();
    return userName;
  }
}

var aboutData = DriveApp.About.get();
var userEmail = aboutData["user"]["emailAddress"];
var userDisplayName = aboutData["user"]["displayName"];

   user = user.getgivenName()