Retrieve information about your CustomerGateways.  You can filter results to
        return information only about those CustomerGateways that match your search
        parameters.  Otherwise, all CustomerGateways associated with your account
        are returned.

        :type customer_gateway_ids: list
        :param customer_gateway_ids: A list of strings with the desired CustomerGateway ID's

        :type filters: list of tuples
        :param filters: A list of tuples containing filters.  Each tuple
                        consists of a filter key and a filter value.
                        Possible filter keys are:

                         - *state*, the state of the CustomerGateway
                           (pending,available,deleting,deleted)
                         - *type*, the type of customer gateway (ipsec.1)
                         - *ipAddress* the IP address of customer gateway's
                           internet-routable external inteface

        :rtype: list
        :return: A list of :class:`boto.vpc.customergateway.CustomerGateway`

def get_all_customer_gateways(self, customer_gateway_ids=None, filters=None):
        """
        Retrieve information about your CustomerGateways.  You can filter results to
        return information only about those CustomerGateways that match your search
        parameters.  Otherwise, all CustomerGateways associated with your account
        are returned.

        :type customer_gateway_ids: list
        :param customer_gateway_ids: A list of strings with the desired CustomerGateway ID's

        :type filters: list of tuples
        :param filters: A list of tuples containing filters.  Each tuple
                        consists of a filter key and a filter value.
                        Possible filter keys are:

                         - *state*, the state of the CustomerGateway
                           (pending,available,deleting,deleted)
                         - *type*, the type of customer gateway (ipsec.1)
                         - *ipAddress* the IP address of customer gateway's
                           internet-routable external inteface

        :rtype: list
        :return: A list of :class:`boto.vpc.customergateway.CustomerGateway`
        """
        params = {}
        if customer_gateway_ids:
            self.build_list_params(params, customer_gateway_ids, 'CustomerGatewayId')
        if filters:
            i = 1
            for filter in filters:
                params[('Filter.%d.Name' % i)] = filter[0]
                params[('Filter.%d.Value.1')] = filter[1]
                i += 1
        return self.get_list('DescribeCustomerGateways', params, [('item', CustomerGateway)])