The filter to apply on the results of DescribeVpnGateways.
            Filters can be:
            a. state - The state of the VPN gateway. (pending, available, deleting, deleted).
            b. type - The type of VPN gateway. Currently the only supported type is ipsec.1.
            c. availabilityZone - The Availability Zone the VPN gateway is in.
            
Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0) Declaration Syntax
 Declaration Syntax