@Override
    public ListBillingGroupsResult listBillingGroups(ListBillingGroupsRequest request) {
        request = beforeClientExecution(request);
        return executeListBillingGroups(request);
    }
@ Override public ListBillingGroupsResult listBillingGroups ( ListBillingGroupsRequest request ) { request = beforeClientExecution ( request ) ; return executeListBillingGroups ( request ) ; }
<p>
Lists the billing groups you have created.
</p>

@param listBillingGroupsRequest
@return Result of the ListBillingGroups operation returned by the service.
@throws InvalidRequestException
The request is not valid.
@throws InternalFailureException
An unexpected error has occurred.
@throws ResourceNotFoundException
The specified resource does not exist.
@throws ThrottlingException
The rate exceeds the limit.
@sample AWSIot.ListBillingGroups