code: @Override
      public GenerateClientCertificateResult generateClientCertificate(GenerateClientCertificateRequest request) {
          request = beforeClientExecution(request);
          return executeGenerateClientCertificate(request);
      }
docs: <p>
  Generates a <a>ClientCertificate</a> resource.
  </p>
  
  @param generateClientCertificateRequest
  A request to generate a <a>ClientCertificate</a> resource.
  @return Result of the GenerateClientCertificate operation returned by the service.
  @throws UnauthorizedException
  The request is denied because the caller has insufficient permissions.
  @throws TooManyRequestsException
  The request has reached its throttling limit. Retry after the specified time period.
  @throws LimitExceededException
  The request exceeded the rate limit. Retry after the specified time period.
  @sample AmazonApiGateway.GenerateClientCertificate