code: @Override
      public UntagProjectResult untagProject(UntagProjectRequest request) {
          request = beforeClientExecution(request);
          return executeUntagProject(request);
      }
docs: <p>
  Removes tags from a project.
  </p>
  
  @param untagProjectRequest
  @return Result of the UntagProject operation returned by the service.
  @throws ProjectNotFoundException
  The specified AWS CodeStar project was not found.
  @throws ValidationException
  The specified input is either not valid, or it could not be validated.
  @throws LimitExceededException
  A resource limit has been exceeded.
  @throws ConcurrentModificationException
  Another modification is being made. That modification must complete before you can make your change.
  @sample AWSCodeStar.UntagProject
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/codestar-2017-04-19/UntagProject" target="_top">AWS API
  Documentation</a>