docs: def create_folder_structure(self):
          """Creates a folder structure based on the project and batch name.
  
          Project - Batch-name - Raw-data-dir
  
          The info_df JSON-file will be stored in the Project folder.
          The summary-files will be saved in the Batch-name folder.
          The raw data (including exported cycles and ica-data) will be saved to
          the Raw-data-dir.
  
          """
          self.info_file, directories = create_folder_structure(self.project,
                                                                self.name)
          self.project_dir, self.batch_dir, self.raw_dir = directories
          logger.debug("create folders:" + str(directories))