def list_google_contacts(cls, credentials):
auth_token = OAuth2TokenFromCredentials(credentials)
gd_client = ContactsClient()
auth_token.authorize(gd_client)
query = gdata.contacts.client.ContactsQuery()
query.max_results = 10
feed = gd_client.GetContacts(q=query)
for i, entry in enumerate(feed.entry):
if entry.name:
print '\n%s %s' % (i + 1, smart_str(entry.name.full_name.text))
try:
contact_image = gd_client.GetPhoto(entry)
except:
print 'ERROR: not found'
