Returns the description of a trainer service. Generally returns the same description found in the spell's tooltip for spells purchased from a class trainer; returns nil for trade skills and recipes.
See also Trainer functions.
Signature:
text = GetTrainerServiceDescription(index)
Arguments:
index- Index of an entry in the trainer service listing (between 1 andGetNumTrainerServices()) (number)
Returns:
text- Description of the service (string)