class Net::IMAP::StringPrep::ProhibitedCodepoint

table.
StringPrepError raised when string contains a codepoint prohibited by

def initialize(table, *args, **kwargs) 

def initialize(table, *args, **kwargs)
  @table  = table
  details = (title = Tables::TITLES[table]) ?
    "%s [%s]" % [title, table] : table
  message = "String contains a prohibited codepoint: %s" % [details]
  super(message, *args, **kwargs)
end