$findMember
Searches for a member, by: nickname/ID/mention/username/username#dicriminator
Usage:
$findMember[nickname/ID/mention/username/username#dicriminator;returnCurrentUser (yes/no) (optional)]
If member is found:
If member is not found:
Related Functions
$authorID, to get the ID from the author of the command
$userID, to return a user ID from a given username