module ActionCable::Connection::Identification

def connection_gid(ids) 

def connection_gid(ids)
  ids.map do |o|
    if o.respond_to? :to_gid_param
      o.to_gid_param
    else
      o.to_s
    end
  end.sort.join(":")
end

def connection_identifier

Return a single connection identifier that combines the value of all the registered identifiers into a single gid. 
def connection_identifier
  unless defined? @connection_identifier
    @connection_identifier = connection_gid identifiers.map { |id| instance_variable_get("@#{id}") }.compact
  end
  @connection_identifier
end

def identified_by(*identifiers)

channel instances created off the connection.
Note that anything marked as an identifier will automatically create a delegate by the same name on any

Common identifiers are current_user and current_account, but could be anything, really.
Mark a key as being a connection identifier index that can then be used to find the specific connection again later. 
def identified_by(*identifiers)
  Array(identifiers).each { |identifier| attr_accessor identifier }
  self.identifiers += identifiers
end