code: public List<AvailabilityZone> getAvailabilityZones() {
  
      final AmazonEC2 amazonEC2 = getEc2Client();
  
      final DescribeAvailabilityZonesResult describeAvailabilityZonesResult = amazonEC2.describeAvailabilityZones();
      final List<AvailabilityZone> availabilityZones = describeAvailabilityZonesResult.getAvailabilityZones();
      LOGGER.info("Found: " + availabilityZones.size() + " availability zone");
  
      return availabilityZones;
    }
docs: *
  Get availability zones in an Amazon AWS region
  
  @return List of availability zones