def get_default(custom_headers:nil)
      response = get_default_async(custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def get_default(custom_headers:nil)
      response = get_default_async(custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Gets the default Geographic Hierarchy used by the Geographic traffic routing
 method.

 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [TrafficManagerGeographicHierarchy] operation results.