code: @Override
      public ReleaseHostsResult releaseHosts(ReleaseHostsRequest request) {
          request = beforeClientExecution(request);
          return executeReleaseHosts(request);
      }
docs: <p>
  When you no longer want to use an On-Demand Dedicated Host it can be released. On-Demand billing is stopped and
  the host goes into <code>released</code> state. The host ID of Dedicated Hosts that have been released can no
  longer be specified in another request, for example, to modify the host. You must stop or terminate all instances
  on a host before it can be released.
  </p>
  <p>
  When Dedicated Hosts are released, it may take some time for them to stop counting toward your limit and you may
  receive capacity errors when trying to allocate new Dedicated Hosts. Wait a few minutes and then try again.
  </p>
  <p>
  Released hosts still appear in a <a>DescribeHosts</a> response.
  </p>
  
  @param releaseHostsRequest
  @return Result of the ReleaseHosts operation returned by the service.
  @sample AmazonEC2.ReleaseHosts
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/ReleaseHosts" target="_top">AWS API
  Documentation</a>