def list_global_by_resource_group_for_topic_type(resource_group_name, topic_type_name, custom_headers:nil)
      response = list_global_by_resource_group_for_topic_type_async(resource_group_name, topic_type_name, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def list_global_by_resource_group_for_topic_type(resource_group_name, topic_type_name, custom_headers:nil)
      response = list_global_by_resource_group_for_topic_type_async(resource_group_name, topic_type_name, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
List all global event subscriptions under a resource group for a topic type

 List all global event subscriptions under a resource group for a specific
 topic type.

 @param resource_group_name [String] The name of the resource group within the
 user's subscription.
 @param topic_type_name [String] Name of the topic type
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [EventSubscriptionsListResult] operation results.