code: def list_supported_types(category_name):
    
    types = get_supported_types(api, category_name)
    type_names = [type.name for type in types]
    print ("Supported account types by name for '{0}': [{1}]".format(
      category_name, COMMA_WITH_SPACE.join(map(str, type_names))))
docs: Prints a list of supported external account type names for the given
    category_name. For example, "AWS_ACCESS_KEY_AUTH" is a supported external
    account type name for external account category "AWS".