def list(group_name:nil, cache_control:'no-cache', custom_headers:nil)
      first_page = list_as_lazy(group_name:group_name, cache_control:cache_control, custom_headers:custom_headers)
      first_page.get_all_items
    end
def list(group_name:nil, cache_control:'no-cache', custom_headers:nil)
      first_page = list_as_lazy(group_name:group_name, cache_control:cache_control, custom_headers:custom_headers)
      first_page.get_all_items
    end
List all entities (Management Groups, Subscriptions, etc.) for the
 authenticated user.


 @param group_name [String] A filter which allows the call to be filtered for
 a specific group.
 @param cache_control [String] Indicates that the request shouldn't utilize
 any caches.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [Array<EntityInfo>] operation results.