toChannel
fun ChannelInfo.toChannel(guildId: String, topic: String = "", slowMode: Int = 0, permissionOverwrites: List<PermissionOverwrite> = emptyList(), permissionUsers: List<PermissionUser> = emptyList(), permissionSync: Int = 0, hasPassword: Boolean = false): Channel(source)
将 ChannelInfo 转化为 Channel 类型， 并可选的提供一些缺失字段的默认值。