code: @Override
      public ModifyLaunchTemplateResult modifyLaunchTemplate(ModifyLaunchTemplateRequest request) {
          request = beforeClientExecution(request);
          return executeModifyLaunchTemplate(request);
      }
docs: <p>
  Modifies a launch template. You can specify which version of the launch template to set as the default version.
  When launching an instance, the default version applies when a launch template version is not specified.
  </p>
  
  @param modifyLaunchTemplateRequest
  @return Result of the ModifyLaunchTemplate operation returned by the service.
  @sample AmazonEC2.ModifyLaunchTemplate
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/ModifyLaunchTemplate" target="_top">AWS API
  Documentation</a>