NON

[usernamealreadyis]

function createPicker(oauthToken) {
var picker = new google.picker.PickerBuilder()
.addView(google.picker.ViewId.SPREADSHEETS) // Or a different ViewId
.setOAuthToken(oauthToken)
.setDeveloperKey(developerKey)
.setCallback(pickerCallback)
.setOrigin(google.script.host.origin) // Note the setOrigin
.build();
picker.setVisible(true);
}