class Convection::Model::Template::Resource::SNSSubscription
@example
sns_subscription 'MySubscription' do endpoint 'failures@example.com' protocol 'email' topic_arn 'arn:aws:sns:us-west-2:123456789012:example-topic' filter_policy 'Type' => 'Notification', 'MessageId' => 'e3c4e17a-819b-5d95-a0e8-b306c25afda0', 'MessageAttributes' => [{' AttributeName' => 'Name', 'KeyType' => 'HASH' }], end