code: @Override
      public DescribeClientVpnConnectionsResult describeClientVpnConnections(DescribeClientVpnConnectionsRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeClientVpnConnections(request);
      }
docs: <p>
  Describes active client connections and connections that have been terminated within the last 60 minutes for the
  specified Client VPN endpoint.
  </p>
  
  @param describeClientVpnConnectionsRequest
  @return Result of the DescribeClientVpnConnections operation returned by the service.
  @sample AmazonEC2.DescribeClientVpnConnections
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/DescribeClientVpnConnections"
  target="_top">AWS API Documentation</a>