old_contents: #!/usr/bin/env python
  
  import tornado.web
  import os
  import uuid
  
  class TestFeatureTrackingHandler(tornado.web.RequestHandler):
      """
      @api {post} /testConfig/ Test Configuration
      @apiName TestConfig
      @apiGroup Test Configuration
      @apiDescription Calling this route will test the video's configuration. When testing is done, an email will be sent to the project's user. This test consists of running object tracking on a small subset of the video, and producing a video showing the results of the tracking. (Due to the potentially long duration of testing, it is infeasible to return the results as a response to the HTTP request. In order to check the status of the testing and view results, see the Status group of messages.)
  
      @apiParam {String} identifier The identifier of the project to test configuration of.
      @apiParam {Integer} [frame_start] The frame number to start the configuration test at. If no frame_start is provided, the configuration test will start at the beginning of the video.
      @apiParam {Integer} [num_frames] The number of frames to analyze. To keep configuration testing short, this parameter must be less than 200. If no num_frames is provided, a default value of 100 will be used.
  
      @apiSuccess status_code The API will return a status code of 200 upon success.
  
      @apiError error_message The error message to display.
      """
      def post(self):
          self.finish("Test feature tracking")
  
new_contents: #!/usr/bin/env python
  
  import tornado.web
  import os
  import uuid
  
  class TestConfigHandler(tornado.web.RequestHandler):
      """
      @api {post} /testConfig/ Test Configuration
      @apiName TestConfig
      @apiGroup Test Configuration
      @apiDescription Calling this route will test the video's configuration. When testing is done, an email will be sent to the project's user. This test consists of running object tracking on a small subset of the video, and producing a video showing the results of the tracking. (Due to the potentially long duration of testing, it is infeasible to return the results as a response to the HTTP request. In order to check the status of the testing and view results, see the Status group of messages.)
  
      @apiParam {String} identifier The identifier of the project to test configuration of.
      @apiParam {Integer} [frame_start] The frame number to start the configuration test at. If no frame_start is provided, the configuration test will start at the beginning of the video.
      @apiParam {Integer} [num_frames] The number of frames to analyze. To keep configuration testing short, this parameter must be less than 200. If no num_frames is provided, a default value of 100 will be used.
  
      @apiSuccess status_code The API will return a status code of 200 upon success.
  
      @apiError error_message The error message to display.
      """
      def post(self):
          self.finish("Test feature tracking")
  
subject: Fix classname