Function auto_moderation_block_action_custom_message_limit 

pub fn auto_moderation_block_action_custom_message_limit(
    custom_message: impl AsRef<str>,
) -> Result<(), ValidationError>

Ensure that an auto moderation block action’s custom_message is correct.

The length must be at most AUTO_MODERATION_ACTION_BLOCK_CUSTOM_MESSAGE_LENGTH_MAX. This is based on this documentation entry.

Errors

Returns an error of type AutoModerationBlockActionCustomMessageLimit if the length is invalid.