$onlyForChannels
The command can only be executed in the provided channels.
Usage
$onlyForChannels[channelIDs;...;errorMessage]
Parameters
channelIDs(Type: Snowflake || Flag: Emptiable): The channels that the command can be executed in. Separate the IDs using;.errorMessage(Type: String || Flag: Emptiable): The message that is returned when the command is used in a non-whitelisted channel.