StaticformatFormat an array of mentions into a single Slack-formatted string.
Array of mention strings
StaticformatFormat a mention string for Slack API message format. Validates format and converts to proper Slack markup: '@here' -> '' 'U1234567890' -> '<@U1234567890>' 'S1234567890' -> ''
Mention string (e.g., '@here', 'U1234567890', 'S1234567890')
Slack mention formatter with validation per Slack API format: https://docs.slack.dev/messaging/formatting-message-text/
Supported mention types:
Everyone
Usage: SlackMention.format(['@here', 'U024BE7LH', 'SAZ94GDB8'])