class AWS::SNS::TopicSubscriptionCollection

map(&:endpoint)
select { |s| s.protocol == :email }.
topic.subscriptions.
# messages sent to the topic
# get the e-mail addressess that receive plain-text
topic. For example:
Represents the collection of all subscriptions for a particular

def initialize(topic, opts = {})

Other tags:
    Private: - 
def initialize(topic, opts = {})
  @topic = topic
  super
end

def list_request 

def list_request
  :list_subscriptions_by_topic
end

def request_opts 

def request_opts
  { :topic_arn => topic.arn }
end