code: public void monitorStart(String directory, boolean force, boolean resume) {
          JSONObject json = new JSONObject().put("directory", directory).put("force", force).put("resume", resume);
  
          monitorStartPost(json);
      }
docs: Start monitoring.
  
  @param directory path to directory in which store the monitoring file
  @param force     clear out existing training data from this directory (by deleting every file prefixed with "openaigym.")
  @param resume    retain the training data already in this directory, which will be merged with our new data