const (
    ChannelTypePush            ChannelType = ChannelType(SDK.ChannelTypePush)
    ChannelTypeGCM             ChannelType = ChannelType(SDK.ChannelTypeGcm)
    ChannelTypeAPNs            ChannelType = ChannelType(SDK.ChannelTypeApns)
    ChannelTypeAPNsSandbox     ChannelType = ChannelType(SDK.ChannelTypeApnsSandbox)