code: @Override
      public CancelCapacityReservationResult cancelCapacityReservation(CancelCapacityReservationRequest request) {
          request = beforeClientExecution(request);
          return executeCancelCapacityReservation(request);
      }
docs: <p>
  Cancels the specified Capacity Reservation, releases the reserved capacity, and changes the Capacity
  Reservation's state to <code>cancelled</code>.
  </p>
  <p>
  Instances running in the reserved capacity continue running until you stop them. Stopped instances that target
  the Capacity Reservation can no longer launch. Modify these instances to either target a different Capacity
  Reservation, launch On-Demand Instance capacity, or run in any open Capacity Reservation that has matching
  attributes and sufficient capacity.
  </p>
  
  @param cancelCapacityReservationRequest
  @return Result of the CancelCapacityReservation operation returned by the service.
  @sample AmazonEC2.CancelCapacityReservation
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/CancelCapacityReservation" target="_top">AWS
  API Documentation</a>