code: @Override
      public StopContactResult stopContact(StopContactRequest request) {
          request = beforeClientExecution(request);
          return executeStopContact(request);
      }
docs: <p>
  Ends the contact initiated by the <code>StartOutboundVoiceContact</code> operation.
  </p>
  <p>
  If you are using an IAM account, it must have permission to the <code>connect:StopContact</code> action.
  </p>
  
  @param stopContactRequest
  @return Result of the StopContact operation returned by the service.
  @throws InvalidRequestException
  The request is not valid.
  @throws ContactNotFoundException
  The contact with the specified ID is not active or does not exist.
  @throws InvalidParameterException
  One or more of the parameters provided to the operation are not valid.
  @throws ResourceNotFoundException
  The specified resource was not found.
  @throws InternalServiceException
  Request processing failed due to an error or failure with the service.
  @sample AmazonConnect.StopContact
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/connect-2017-08-08/StopContact" target="_top">AWS API
  Documentation</a>