} else if (!privateIpAddress.equals(other.privateIpAddress))
         return false;
      if (ramdiskId == null) {
         if (other.ramdiskId != null)
            return false;
      } else if (!ramdiskId.equals(other.ramdiskId))
         return false;
      if (region == null) {
         if (other.region != null)
            return false;
      } else if (!region.equals(other.region))
         return false;
      if (rootDeviceName == null) {
         if (other.rootDeviceName != null)
            return false;
      } else if (!rootDeviceName.equals(other.rootDeviceName))
         return false;
      if (rootDeviceType == null) {
         if (other.rootDeviceType != null)
            return false;
      } else if (!rootDeviceType.equals(other.rootDeviceType))
         return false;
      if (virtualizationType == null) {
         if (other.virtualizationType != null)
            return false;
      } else if (!virtualizationType.equals(other.virtualizationType))
         return false;
      return true;
   }

   @Override
   public String toString() {
      return "[region=" + region + ", availabilityZone=" + availabilityZone + ", instanceId=" + instanceId

      result = prime * result + ((privateIpAddress == null) ? 0 : privateIpAddress.hashCode());
      result = prime * result + ((ramdiskId == null) ? 0 : ramdiskId.hashCode());
      result = prime * result + ((region == null) ? 0 : region.hashCode());
      result = prime * result + ((rootDeviceName == null) ? 0 : rootDeviceName.hashCode());
      result = prime * result + ((rootDeviceType == null) ? 0 : rootDeviceType.hashCode());
      result = prime * result + ((virtualizationType == null) ? 0 : virtualizationType.hashCode());
      return result;
   }

   @Override
   public boolean equals(Object obj) {
      if (this == obj)
         return true;
      if (obj == null)
         return false;
      if (getClass() != obj.getClass())
         return false;