human
Complete the below
def get_default_version(module=None):

    ''''Returns the name of the default version for the module.
    Args:
    module: Module to retrieve the default version for, if None then the current
    module will be used.
    Returns:
    String containing the name of the default version of the module.
    Raises:
    InvalidModuleError if the given module is not valid, InvalidVersionError if
    no default version could be found.'
    '''

Give me a the Python code you requested?
assistant
#Here is the Python code you requested.
    def _ResultHook(rpc):
        mapped_errors = [modules_service_pb.ModulesServiceError.INVALID_MODULE, modules_service_pb.ModulesServiceError.INVALID_VERSION]
        _CheckAsyncResult(rpc, mapped_errors, {})
        return rpc.response.version()
    request = modules_service_pb.GetDefaultVersionRequest()
    if module:
        request.set_module(module)
    response = modules_service_pb.GetDefaultVersionResponse()
    return _MakeAsyncCall('GetDefaultVersion', request, response, _ResultHook).get_result()