code: @Override
      public DescribePullRequestEventsResult describePullRequestEvents(DescribePullRequestEventsRequest request) {
          request = beforeClientExecution(request);
          return executeDescribePullRequestEvents(request);
      }
docs: <p>
  Returns information about one or more pull request events.
  </p>
  
  @param describePullRequestEventsRequest
  @return Result of the DescribePullRequestEvents operation returned by the service.
  @throws PullRequestDoesNotExistException
  The pull request ID could not be found. Make sure that you have specified the correct repository name and
  pull request ID, and then try again.
  @throws InvalidPullRequestIdException
  The pull request ID is not valid. Make sure that you have provided the full ID and that the pull request
  is in the specified repository, and then try again.
  @throws PullRequestIdRequiredException
  A pull request ID is required, but none was provided.
  @throws InvalidPullRequestEventTypeException
  The pull request event type is not valid.
  @throws InvalidActorArnException
  The Amazon Resource Name (ARN) is not valid. Make sure that you have provided the full ARN for the user
  who initiated the change for the pull request, and then try again.
  @throws ActorDoesNotExistException
  The specified Amazon Resource Name (ARN) does not exist in the AWS account.
  @throws InvalidMaxResultsException
  The specified number of maximum results is not valid.
  @throws InvalidContinuationTokenException
  The specified continuation token is not valid.
  @throws EncryptionIntegrityChecksFailedException
  An encryption integrity check failed.
  @throws EncryptionKeyAccessDeniedException
  An encryption key could not be accessed.
  @throws EncryptionKeyDisabledException
  The encryption key is disabled.
  @throws EncryptionKeyNotFoundException
  No encryption key was found.
  @throws EncryptionKeyUnavailableException
  The encryption key is not available.
  @sample AWSCodeCommit.DescribePullRequestEvents
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/codecommit-2015-04-13/DescribePullRequestEvents"
  target="_top">AWS API Documentation</a>