def list_labs(user_name, custom_headers:nil)
      response = list_labs_async(user_name, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def list_labs(user_name, custom_headers:nil)
      response = list_labs_async(user_name, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
List labs for the user.

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

 @return [ListLabsResponse] operation results.