Class User

// Log the domain names associated with all users who have edit access to a file.
var file = DriveApp.getFileById('1234567890abcdefghijklmnopqrstuvwxyz');
var editors = file.getEditors();
for (var i = 0; i < editors.length; i++) {
  Logger.log(editors[i].getDomain());
}

// Log the email address of all users who have edit access to a file.
var file = DriveApp.getFileById('1234567890abcdefghijklmnopqrstuvwxyz');
var editors = file.getEditors();
for (var i = 0; i < editors.length; i++) {
  Logger.log(editors[i].getEmail());
}

// Log the names of all users who have edit access to a file.
var file = DriveApp.getFileById('1234567890abcdefghijklmnopqrstuvwxyz');
var editors = file.getEditors();
for (var i = 0; i < editors.length; i++) {
  Logger.log(editors[i].getName());
}

// Log the URLs for the photos of all users who have edit access to a file.
var file = DriveApp.getFileById('1234567890abcdefghijklmnopqrstuvwxyz');
var editors = file.getEditors();
for (var i = 0; i < editors.length; i++) {
  Logger.log(editors[i].getPhotoUrl());
}